GunSerialsWinchester Thumb Trigger (Model 99) serial numbers — why most have none
A single-shot, bolt-action .22 made from 1904 to 1923. It uses a thumb-operated release instead of a conventional trigger. Winchester called it Model 99 in catalogs, but did not stamp that name on the rifles.
- Produced:
- 1904–1923
- Action:
- bolt-action
New to gun terms? Start here
- Model:
- The name of the gun design, such as Model 94. A model name that looks like a year does not tell you when your gun was made.
- Serial number:
- The number stamped on an individual gun. Include letters that are part of the number. A separate letter stamped above it, like the Model 97's C, D or E, is a different marking.
- Receiver:
- The main metal body just behind the barrel. The receiver ring is its front section, where the barrel joins it.
- Tang:
- A strip of metal extending from the receiver into the stock. The lower tang runs underneath, behind the trigger.
- Stock:
- The part you hold against your shoulder, usually made of wood on older Winchesters.
- Forearm or forend:
- The part under the barrel where your forward hand holds the gun.
- Action:
- The mechanism that loads and removes cartridges. Names such as lever action, pump action, and bolt action describe how it works.
- Caliber or gauge:
- The ammunition size or type a gun is designed to use. This marking is different from the model and serial number.
- Takedown:
- A version designed to separate into major sections for storage. A takedown joint is where those sections meet.
- Proof mark:
- A factory testing mark, such as Winchester's oval WP stamp. It is not a serial number or a date code.
- Peep or aperture sight:
- A rear sight with a small hole to look through. A hooded front sight has a cover around it.
Most Thumb Trigger guns have no serial number
Winchester never numbered the Thumb Trigger.
These guns usually have model and ammunition markings on the barrel, and may also have patent dates. Those are different from a serial number. The model’s production ended before federal law required serial numbers on rifles and shotguns in 1968. A missing number is normal for this model; it does not by itself show whether the gun has been altered.
The references disagree on the total: 77,584 by Winchester's own figures, about 75,433 in the Blue Book.
Based on the Model 1900, with a thumb-operated release designed by T. G. Bennett instead of a conventional trigger. “Model 99” was a catalog name added in February 1919; it was not stamped on the rifles. The original stock was gumwood, so a walnut stock is a replacement.
Winchester stained the gumwood dark to look like walnut, so color alone will not tell you which wood you have. Look at the grain under the finish. Gumwood is smooth and plain, with fine, even grain and almost no pores you can see. Walnut has open pores you can see and feel, and darker streaks running through the grain. Where the finish has worn away, gumwood shows a lighter, evenly colored wood underneath.
Without a factory serial number, a serial-number search cannot identify this individual gun. The feature clues below may help narrow its age.
If your Thumb Trigger has a number on it
A number may be an owner’s mark, a store’s inventory number, or an importer’s mark. Some factory stamps identify an inspector or a part. On certain models, a two-digit stamp under the barrel can indicate a year. Patent dates describe patents, not when this particular gun was made. We do not have serial lookup tables for these markings.
How to date a Thumb Trigger without a serial number
Winchester changed the Thumb Trigger over its run, and the published references date some of those changes. These clues can help narrow the possible years:
- July 1904 to March 1905: the barrel carries the August 29, 1899 patent date and “Pat. Pend.”, chambered for .22 Short and Long.
- March 1905 to 1914: the February 14, 1905 patent date is added; still Short and Long only.
- 1914 to September 1918: the marking adds .22 Extra Long.
- September 1918 to May 1923: three-cartridge marking with a cheapened finish; the stock skipped its final polish.
Features suggest a range of years. Winchester sometimes used older parts after a design changed, and parts may have been replaced later.
Winchester Thumb Trigger value: what it sells for at auction
We found 10 single-gun auction sales of the Winchester Thumb Trigger at Rock Island Auction Company, Morphy Auctions, Poulin Auctions, Redding Auction Services, and Amoskeag Auction Company between Sep 2023 and Sep 2026. They sold for $50 to $4,700.
That is too few sales for a typical price, so we list each one instead. A price table needs at least 40 sales. With only a few sales, one gun in unusual condition can set the high or the low.
We leave out listings described as deluxe, special-order, engraved, restored, or commemorative, and other exceptions in the value guide. Wear, repairs, original parts, and factory upgrades can make a particular gun worth more or less. These sales are a comparison, not an appraisal of your gun.
Every Thumb Trigger sale we counted
Newest first. Their features and condition may differ from your gun. A lot number identifies an item in an auction.
| Sold | Gun | Auction company | Price |
|---|---|---|---|
| Aug 2026 | Thumb Trigger · 22 | Rock Island lot 3066 | $4,700 |
| Apr 2026 | Thumb Trigger | Poulin lot 3039 | $793 |
| Mar 2026 | Thumb Trigger | Redding lot 469R | $800 |
| Mar 2026 | Thumb Trigger | Redding lot 362R | $550 |
| Mar 2026 | Thumb Trigger · 22 Short | Redding lot 361R | $50 |
| Nov 2025 | Thumb Trigger | Morphy lot 1393 | $922 |
| Aug 2025 | Thumb Trigger | Amoskeag lot 2528 | $302 |
| Mar 2024 | Thumb Trigger | Amoskeag lot 472 | $3,146 |
| Feb 2024 | Thumb Trigger · 22 Sl | Rock Island lot 4682 | $881 |
| Nov 2023 | Thumb Trigger | Amoskeag lot 442 | $3,932 |
Prices are in US dollars and include the buyer’s premium, the auction company’s fee added to the winning bid, where the house charges one; Redding charges none. They are not the amount the seller receives. A dealer’s offer or private sale price may differ. The full picture, model by model →