How can you find out if a pair of Thomas Jefferson dueling pistols 972ab is stolen?

In most cases, when purchased, pistols need to be registered with the ATF. Contact a local gun dealer and see if he could help you trace down ownership. * The ATF doesn't keep a registry of pistols, only machine guns, short barreled shotguns and other destructive devices. Your local police can find out if the serial number has ever been reported as stolen, but a lot of people who have had a gun stolen don't even know the serial number, so it doesn't get on any lists. Anyway, what you are asking about is a modern "commemorative set" which doesn't have much value so wouldn't have been grabbed by someone wanting to pawn it and certainly wouldn't be stolen by anyone planning to use it.