The leather wallet had a broken button snap, so I thought I'd try and fix it myself.
I carefully drilled out the flared bits on the other chromed
snaps, since I wanted to replace them with black snaps, and after
watching a couple of videos on the process, used the setter and anvil
with a rubber mallet to install the new pieces.
It worked, although the new buttons require a lot of force to snap closed, but are certainly more secure...