I have saw one in France. It was a remington 1858 "Texas" (brass model)produced by the famous "PR" in 1978 ! And i asked to some Italian hunters.
They told me :
ICAM could be the kind of machinery for engraving.
ICAM engraving machines - Marcheno (BS)
Then, ICAM was certainly the engraver, i guess.
I have no idea when he has open the store, which his the collaboration and when he ceased business.