How do you find the age of a shotgun by Iver Johnson?

To determine the age of an Iver Johnson shotgun, you can reference the serial number, which is typically located on the frame or barrel. Iver Johnson Firearms often have a manufacturing date linked to their serial numbers; specific ranges correspond to particular years. Additionally, you can consult Iver Johnson's historical records or online databases that provide details about production years based on serial numbers. Finally, if necessary, consider reaching out to a firearms expert or collector for assistance.