thanks raimey...

have jp sauer side lock gun # 55xxx, with fluid steel barrels...barrel flats have crown over v proof and crown over s proofs...among other marks...barrels do not have any stamps that i recognise, that suggest who made the tubes...

could these be unmarked krupp barrels from circa 1890? or some other tube maker?...

Last edited by ed good; 01/27/21 10:41 PM.

keep it simple and keep it safe...