Dunno where else to put this thread.
I've asked around on the CCC slack chat, to no avail. I've seen many numbered coins (e.g. Genesis Series 2) go out, and I dunno how the numbers are made raised?
1. Please don't tell me they make a new mould for every number!
2. I highly doubt they're soldered on
3. Some people say 3D printed, but wouldn't a 3d printer leave faint lines across the surface?