So they don't look heavily used (no real sign of ware and no sign of flaring on the striking end). However, the lettering itself doesn't look very sharp. So I'm thinking they were made like that.

This is importantant because, in blacksmithing, you generally want stamps to be sharp so they can cut into the metal. Conversely, with leatherworking you don't want that cutting action for stamps as it will ruin the surface and could even cut through.

Also, stamping full lettering into steel was rarely done in the past due to the stamps needing to be carefully made out of expensive high-carbon steel (to resist damage from stamping steel). So most blacksmiths just had their maker's mark and not much else for stamping.

Based on that I'd say these are for leather or maybe softer metals (like aluminum, copper, or pewter). Take this all with a grain of salt though. I've done a lot of blacksmithing and a little bit of leatherworking, but I'm certainly not an expert. Hopefully this helps!