Geno, the sn is 37934. I don't see a JF on the gun based on any of the pictures. Would it be someplace other than the water table or barrel flats?

The weight I was given earlier has been corrected. According to the gunsmith it is 3 kg 700 grams. If I translated it correctly that comes out to 8 lbs, 2 1/2 oz. I am told it feels deceptively lighter than that. Also, the circumference through the wrist is a slightly larger 4 1/4". The barrels are 32".

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