Do a search for images of hand engraving gun parts Canada, and any variations of those words you can think of. Then choose a style you like, and contact the artist.
Lots of hand engravers around. There is no excuse for resorting to the local scratch engraver at the trophy shop.
For what it's worth. if you are looking for a silver disk to use, take a close look at the various size silver coins. For a thumb piece, likely a quarter or half dollar silver coin would do. Bend the coin, fit it in it's location (inlay it) then clean up the surface, file and and polish it smooth on the visible face before sending it off to be carved upon. Likely safer than trying to get a decent bend in it after the engraving has been bought and paid for!
Of course, silver sheet stock is readily available from jewellery supplies houses.
Hm, I wonder if I could make one with a silver quarter like you are suggesting. I might give that a try. Thank you for the hand engraver search suggestion. For some reason I couldn't zero in on that. Too much weed vape I guess. You are absolutely thinking the way I was. The regular engraving in the mall is nowhere near the same.
Edit: I have a silver British shekel or whatever coin they used in the 30s thats silver and almost worn blank already.




















































