The full Goforth database is not always easy to find for free, but the best way to access it is via the Internet Archive (search "Bill Goforth Iver Johnson serial numbers") or dedicated sections on GunValuesBoard.com and TheFirearmsForum.com , where members have transcribed his tables.
is considered the industry-standard "database" for these serials. Community Forums : Collectors on platforms like Reddit/r/guns Iver Johnson Revolver Serial Number Database BEST
1st or 2nd Model (1894–1908). These use black powder and are unsafe with modern ammo . The full Goforth database is not always easy
Look at the top strap. If it has a single leaf spring for the barrel latch, it’s a First Model. These are black powder only. These use black powder and are unsafe with modern ammo
Pat. Apr 6.86 – Feb 15.87 – May 10.87 Frame: Small frame, exposed hammer, leaf spring Serial: 78,412 Caliber: .38 S&W
⚠️ : Iver Johnson reused serial numbers across different models. A serial number alone is useless without knowing the model and patent dates.