The proofmarks tell me , made in Italy in 1963( XVIII ), S. Marco, Gardone-Brescia, Chrom (no E) Nitro Steel Boehler, Kg 1,510, 17.0 on both barrels, 16.2 on left barrel, 16.5 on right barrel, star in a circle over PSF, star in a circle over FINITO, a small star in a circle over a shield and a lion with his paw on a cube with B in one flat and G in another.

It is all pretty much Italian proofs for 1963.


After the first shot the rest are just noise.