found on the left side of the grip strap (under the grips) or under the top strap. Because many early Iver Johnson records are incomplete or scattered, collectors rely on specialized databases and reference guides like those by expert W.E. Goforth Iver Johnson Serial Number & Identification Guide 1. Locate the "True" Serial Number
usually indicates an early black powder model (pre-1909), while a coil mainspring indicates a 3rd Model designed for smokeless powder. Owl Head Grips: If the owl on the grip is facing toward the barrel , it is often an earlier model; facing can indicate later production. Patent Dates: Check the top of the barrel. Dates like "PAT'D NOV. 17.08" Iver Johnson Revolver Serial Number Database BEST
Used for later models, where each prefix has its own chronological chart . 3. Barrel Markings found on the left side of the grip
On top-break models, open the action and look at the frame underneath the top strap. Deciphering Serial Letter Prefixes Locate the "True" Serial Number usually indicates an
| Source | Coverage | Accuracy | Searchable? | |--------|----------|----------|--------------| | Goforth book | Top-break models, 1880–1940 | High (best available) | No (printed) | | Collector forums | User-submitted, small sample | Moderate | Partial | | Cody Museum letters | <5% of production | High if found | No | | “Online serial databases” (e.g., GunData, OldGuns) | Very incomplete, often wrong | Low | Yes, but unreliable |