Armi San Marco
Reproduction of the Colt Navy model 51 with conversion (I don't remember well how that is called, perhaps Richards-Mason)?
Manufactured in small series around 1958 by “Armi San Marco” of Mr. Buffoli - in Gardone Valtrompia - Brescia, from which I come to collect an industrial quantity of spare parts, because the company went in bankruptcy and one gave me a hundred kilos of screw, springs etc
The punch was that of the proofhouse of Gardone and not of Brescia (almost unobtrusive: or it of an easy way to make believe that the weapon is authentic?)
Alberto Riccadonna