Three marks place almost any Luger. The stamp over the chamber gives the year, the marking on the centre toggle link gives the maker, and the serial number on the front of the frame ties the whole pistol together. Everything else on the gun — eagles, crowns, letters, small two-digit numbers — is a proof, an acceptance stamp or a part number, and each of those answers a narrower question about who tested the pistol and who took delivery of it.
Start at the chamber
The chamber stamp is the date. On German military Lugers the year of manufacture is stamped on the flat above the chamber, and from 1936 onward it is a plain four-digit year: 1936, 1937, 1939, 1940. Late Mauser production shortened it to the last two digits, so wartime guns read 41 or 42. Commercial Lugers generally carry no chamber date at all, which is itself a useful signal: a blank chamber usually means a commercial or export pistol rather than a military contract gun.
Two chamber stamps are letters instead of numbers. When Mauser resumed military P.08 production in the mid-1930s, Germany was still bound by the Treaty of Versailles, so the year was concealed behind a single code letter. K is 1934 and G is 1935. K-date pistols are the first true German Army contract Lugers of the Mauser era and are the scarcer of the two. From 1936 the factory gave up on the pretence and stamped the actual year.
Then read the toggle
The centre toggle link carries the maker’s name or code. Before the secret-code era, makers signed their work openly; afterwards they used assigned codes, for the same reason the K98k rifle programme used them.
| Toggle mark | Maker | Period |
|---|---|---|
| DWM monogram | Deutsche Waffen- und Munitionsfabriken, Berlin | 1900s through WWI, plus commercial production after |
| Erfurt (with crown) | Royal arsenal, Erfurt | Imperial military, WWI era |
| Simson & Co. Suhl | Simson & Co., Suhl | 1925–1934, just under 12,000 pistols |
| S/42 | Mauser, Oberndorf | from late 1934, changing over during 1939 |
| 42 | Mauser, Oberndorf | early 1939 to early 1941 |
| byf | Mauser, Oberndorf | 1941–1942 |
| Krieghoff (anchor and HK) | Heinrich Krieghoff, Suhl, for the Luftwaffe | ~10,000 in 1935–1937, ~2,000 more 1940–1944, ~200 in 1945 |
| Vickers | Vickers Ltd., Birmingham | Dutch contract, interwar |
The Mauser sequence is the one that trips people. A single factory in Oberndorf went from S/42 to 42 to byf inside seven years, so the toggle code alone dates a Mauser Luger to a window of a year or two before you even look at the chamber. The S/42-to-42 changeover happened during 1939, and it travelled with two other changes: the test proof moved from the mid style to the late style, and the army acceptance stamp changed from E/63 to E/655. Those three changes moving together on one pistol is a good sign the gun is what it says it is.
Proof and acceptance stamps are two different things
A proof mark says the pistol was fired and survived. An acceptance mark says an inspector took delivery of it. They sit next to each other on the receiver and they mean different things.
- Imperial, to 1918. A stylised king’s crown over an inspector’s letter. By mid-1911 Erfurt was applying three inspection stamps plus a test proof on the right side of the receiver, and DWM followed the same practice by about mid-1912.
- Weimar, 1920s and early 1930s. Crown-over-script-letter inspection marks. The Weimar-style eagle continued in service as the P.08 proof mark until late 1939, so an eagle proof by itself does not make a pistol Nazi-era.
- “1920” stamped on the receiver or frame. This is a Reichswehr property mark applied in late 1920 and early 1921 under the Versailles arms accounting rules. It marks a pistol retained in official inventory, not a 1920 production date.
- Waffenamt, 1934 onward. An eagle over a number is the army acceptance stamp of the Heereswaffenamt. On Mauser P.08s the code changes from E/63 to E/655 during 1939.
- Sunburst K. A Weimar and later Nazi police inspection and acceptance mark, found on pistols issued to police rather than to the army.
- Crown/N, later eagle/N. Commercial nitro proof. A pistol with commercial proofs and no Waffenamt was sold on the civilian or export market.
Matching numbers, and where to look for them
The frame carries the full serial number; small parts carry only its last two digits. On the frame the serial is stamped on the front, below the barrel, often with a letter suffix that identifies the production block. That suffix is part of the serial, so a pistol numbered 4711a is a different gun from 4711b.
The parts that should carry the matching last two digits are the breechblock, the front and rear toggle links, the side plate, the takedown lever, the trigger, the sear bar and safety, the extractor, the hold-open latch, the grip screws and often the grips themselves. Several of those — side plate, takedown lever, trigger, toggle links — are visible without taking the pistol apart, which is why a seller can photograph them and a buyer should ask for it.
Two cautions belong with that list. The last two digits are a clue, not a proof: in a production run of thousands, plenty of unrelated parts share the same two digits by coincidence. And on wartime and post-war rebuilt pistols, arsenal workers sometimes renumbered replacement parts to match, which is called force-matching and usually shows in a stamp that is a different depth, font or alignment from the factory originals.
Common misidentifications
- A refinished Luger read as an original one. Lugers left the factory with small parts heat-treated to a golden straw colour. A pistol where the safety lever, trigger, extractor and toggle pin are all the same blue as the frame has almost certainly been refinished.
- The “1920” property stamp read as a production date. It is an inventory mark from the Versailles accounting period, not a year of manufacture. Read the chamber for the year.
- An eagle proof read as a Nazi-era mark. The Weimar eagle stayed in use as the proof mark on the P.08 until late 1939. The army acceptance stamp, not the proof, is what tells you about the period.
- A commercial Luger called a police gun because it has no Waffenamt. No acceptance stamp usually means no military or police contract. Look for the Crown/N or eagle/N commercial proof to confirm it.
- A parts gun sold as all-matching. The signals are a suffix letter that appears on the frame but not the barrel, two-digit numbers in visibly different fonts or stamping depths, a straw-coloured part sitting next to an identical part in blue, and mismatched wear patterns between the toggle and the receiver rails.
- A Finnish or other foreign-service Luger treated as non-original. Service-issued pistols often carry additional national marks. Those are provenance, not damage, and they are worth describing rather than explaining away.
On the floor at OSA
We describe every Luger by its actual marks — toggle code, chamber date, proof and acceptance stamps, and exactly which parts match — with photographs of the pistol you will receive. The full case sits on the Luger P08 hub, and our Luger P08 buyer’s guide covers caliber choice, straw finish and the pre-purchase checklist in more depth than this article does.
Two in the case right now show how differently the same design can be marked. The DWM commercial Luger P08 in .30 Luger carries a Crown N commercial proof and no military acceptance, exactly the pattern described above for a civilian-market pistol. The DWM 1915 LP.08 Artillery Luger in 9mm is the other end of it: Imperial military production with a chamber date, an eight-inch barrel and a tangent sight.
General information for collectors, not legal or investment advice. Codes, markings and dating can vary; verify details on the individual firearm.
Common Questions
What does the number stamped over the chamber on a Luger mean?
It is the year the pistol was made, and it is the fastest way to date a German military Luger. From 1936 onward it appears as a full four-digit year on the flat above the chamber, so a pistol reading 1939 was built in 1939. Late Mauser wartime production shortened it to the last two digits, giving chambers stamped 41 or 42. Two years appear as code letters rather than numbers, because Germany was still concealing rearmament from Treaty of Versailles inspectors: K stands for 1934 and G stands for 1935. A completely blank chamber is not a fault. Commercial and export Lugers were generally not chamber-dated at all, so an unmarked chamber alongside commercial proof marks and no military acceptance stamps points to a civilian-market pistol rather than a contract gun. Read the chamber first, then confirm it against the toggle code before drawing any conclusion about the year.What is the difference between S/42, 42 and byf on a Luger toggle?
All three are the same factory, Mauser in Oberndorf am Neckar, using different codes at different times, so the toggle mark alone narrows a Mauser Luger to a window of a year or two. S/42 came into use in late 1934 when Mauser resumed military production and ran until the changeover during 1939. The plain numeric 42 replaced it in early 1939 and stayed in use until early 1941. From 1941 the three-letter code byf took over, and byf-marked Lugers are wartime guns carrying 41 or 42 over the chamber. The 1939 changeover is useful to know because it moved together with two other changes on the same pistols: the test proof shifted from the mid to the late style, and the army acceptance stamp changed from E/63 to E/655. Seeing all three move together on one pistol is good evidence the gun has not been assembled from parts of different periods.How do I check whether a Luger has matching numbers?
Read the full serial number on the front of the frame first, including any letter suffix, then check that the last two digits of that number are repeated on the small parts. The breechblock, both toggle links, the side plate, the takedown lever, the trigger, the sear bar and safety, the extractor and the hold-open latch should all carry them, and several are visible without disassembly. Then look at how the numbers were stamped rather than only at what they say. Factory stamping is consistent in font, depth and alignment across the pistol, while a force-matched replacement part usually betrays itself with a shallower or differently shaped stamp. Remember that two matching digits in a run of thousands of pistols can be coincidence, so treat them as strong evidence rather than as certainty. The suffix letter on the frame serial matters too, because it identifies the production block the pistol belongs to.Does a mismatched Luger still have collector value?
Yes, though less than an all-matching example of the same maker and year. Lugers were serialised down to the grip screws, so the collector market rewards originality more sharply than it does with most service pistols, and an all-matching gun can carry a substantial premium over an otherwise identical mismatched one. That said, a mismatched Luger is still a Luger. Shooters often prefer them precisely because nobody is anxious about wearing out a numbered part, and a mismatched pistol with a strong bore and a correct maker and date can be an honest way into the design at a much lower entry price. What matters is that the listing says plainly which parts match and which do not, and photographs the numbers rather than describing them, so you are paying for what is actually in the box rather than for an optimistic summary of it.Are import marks on a Luger a problem?
No. An import mark is a legal requirement, not a defect. Firearms imported into the United States carry the importer’s name and location stamped somewhere on the gun, and on a Luger that stamp is usually small and placed on the frame or the barrel. Collectors generally prefer an unmarked bring-back pistol, and those do command a premium, but the mark tells you the pistol entered the country through a documented channel, which has its own value. What you should look at is placement and depth: a discreet stamp in an unobtrusive spot affects the pistol far less than a deep mark across the receiver. A pistol with no import mark at all is worth a second look, because it either predates the requirement, came home as a veteran bring-back, or was never legally imported. Either way, an import mark should be described and photographed on the listing rather than quietly cropped out of the photographs.Sources
- Relics & Rifles, “Luger P.08 Identification & Dating” — https://relicsandrifles.com/reference/luger-p08.html (toggle marks by maker, chamber date conventions, numbered parts, proof categories)
- Rock Island Auction, “Rare Mauser 1934 ‘K’ Date ‘S/42’ Code P.08 Luger Pistol” — https://www.rockislandauction.com/detail/4094/418/rare-mauser-1934-k-date-s42-code-p08-luger-pistol (K = 1934, first German Army Mauser contract)
- Jan C. Still Lugerforums, “On the Choice of the K & G Date Codes” — https://www.lugerforums.com/threads/on-the-choice-of-the-k-g-date-codes.128473/ (K and G code rationale)
- Jan C. Still Lugerforums, “S/42 Markings” — https://www.lugerforums.com/threads/s-42-markings.132399/ and “42 code luger variations” — https://www.lugerforums.com/threads/42-code-luger-variations.23075/ (S/42 to 42 changeover during 1939, together with test proof and E/63 to E/655 acceptance change; 1939 and 1940 serial ranges)
- Gun Digest gun values, “Lugers: Mauser Manufactured Lugers 1930–1942” — https://gunvalues.gundigest.com/lugers/mauser-manufactured-lugers-1930-1942-dwm/ (Mauser code sequence, chamber dating of late production)
- Forgotten Weapons, “Lugers Under Versailles: The 1926 Simson P08” — https://www.forgottenweapons.com/lugers-under-versailles-the-1926-simson-p08/ (Simson 1925–1934, under 12,000 pistols, Erfurt tooling)
- Forgotten Weapons, “Krieghoff: Lugers for the Luftwaffe” — https://www.forgottenweapons.com/krieghoff-lugers-for-the-luftwaffe/ (Krieghoff delivery quantities and years)
- Jan C. Still Lugerforums, “Proof Marks” — https://www.lugerforums.com/threads/proof-marks.527/ (Imperial crown-over-letter inspection marks, Erfurt and DWM stamping practice, sunburst K police mark, 1920 Reichswehr property stamp, Weimar eagle proof to late 1939)
- Wikipedia, “Waffenamt” — https://en.wikipedia.org/wiki/Waffenamt (role of the Heereswaffenamt in weapons acceptance)
- Luger Proof/Acceptance Mark Identification Guide — https://www.germandaggers.com/Gallery/GLP.php (mark-by-mark reference)
- Jan C. Still Lugerforums, “List of numbered parts” — https://www.lugerforums.com/threads/list-of-numbered-parts.36798/ (parts carrying the last two digits — cited from search summary, thread itself paywalled)