Question. Seen my Uncle's hammer 10ga double that he bought back in the 50's. He used it with modern factory 2 7/8 inch loads to about 1970 when one hammer spring failed. Looks like reblued fluid steel to me. If I remember right, top rib marked "W W Greener and Son works Birmingham". Barrel marked with crossed sceptres with crown on top and crown with double scriped B's (Birmingham proofs). 118 or 11.8 over 12m (both barrels) Not for Ball on left. some scroll engraving.
Serial Number 185**. Looking for date of manufacture and possibly replacement hammer spring.