I found the website where you can buy the stamp to imprint the Bitcoin symbol onto coins, you might be interested. (I’m not getting paid, and it’s not an affiliate link, I’m sharing the site because I think it could be beneficial for the community):
Plebstyle
Bitcoin punch stamp (by exitkey)
Durable impact stamp made from chrome-vanadium steel with engraved Bitcoin logo. Perfect for permanently marking the symbol onto metal surfaces. Fo...
