⚠️ : Iver Johnson reused serial numbers across different models. A serial number alone is useless without knowing the model and patent dates.
: Uses the serial number and patent dates to verify if a revolver is a "Second Model" (black powder) or "Third Model" (smokeless powder) to prevent the use of dangerous modern ammunition in antique frames. Iver Johnson Revolver Serial Number Database BEST
Goforth’s book provides the only reliable serial number ranges correlated with production years. It details the subtle differences between models (such as the "Safety Automatic" series) which is required to properly date the firearm. ⚠️ : Iver Johnson reused serial numbers across