Stumbled upon these images of a Sauer hammer dreilufer at Shotgun world, I think it was, that appears to have experienced a stout once over on the tubes or more than likely a rebarrel effort on the scattergun tubes at the Hnel facility and then reproof at the Zella-Mehlis facility post 1911. Martin pegged it and I'm curious how he arrived at the conclusion. I don't see any crowns but I'd like to see the area between the flats and the forend hanger.

Kind Regards,

Raimey
rse