Volume 20, Issue 3 (July 1975)
A New Serial Number Marking System Applicable to Firearms Identification
The serial numbers of stolen or misused items are sometimes removed to prevent their identification . Since these serial numbers are generally recorded on metal items by being stamped into the metal, the marking is only present on the surface and can be readily removed by filing or grinding. Such removal of the number generally does not affect the usefulness of the item, since the number is usually stamped in a noncritical region of the outer surface.