I had correspondence with MR Crawford of W&C Scott back in the early '80s concerning a Pinfire of their make. This is likewise a 12ga & has no serial number. This is a bar action, bar in wood gun & has a straight grip stock. Mr Crawford confirmed it was an "A" quality gun, built under Samuel Matthew's patent #2441 of 1863 & likely built between then & 1865. He further added it was the only Scott gun he had encountered built under the Matthews patent & also the only "Breech Loading" Scott he was aware of without a SN. While he did not directly say it, this left the impression with me it might not be unusual to find a Muzzle Loading Scott without a SN.
This gun has W&C Scott & Son on each lock plate as well as W&C Scott & Son 7 Dorsett Place Pall Mall East London for Benj. D. Kennedy Louisville KY on the top rib.
I might add though, I do not believe it unusual to find the "Gunmakers" name on the outside of a lockplate & a "Lockmakers" name inscribed on the inside. There was however no other name inscribed inside these locks that I recall.
The forend is incidently attached by a key similar to a ML key.
