Parker History-please participate

[TARNATION !!!]

Still curious how one proves or disproves "unfired" (after factory). Obvious after many shots, but what about a few and proper cleaning?
Cheers,
Jack

[C.O.B.]

If a gun has been fired even only once there will be evidence of that around the firing pin and on the breech face. How you can seperate a set of bbls as unfired VS fired I couldn't say.