These are really cool. I bought a few that were tied to historic bitcoin transactions like the 10k pizza, etc. this was a while ago but I lost interest because I didn’t notice any discussion here and it could have been a scam for all I knew. The cost was do cheap at the time and I was more interested in learning the process which I never really mastered tbh.
If you want, we can talk about it here or in chat. Up to you!
Right now, the prices aren't too far off from where it all started few years ago. There's definitely been a general drop in interest, but I still find these really interesting. The pizza ones are cool and still pretty accessible btw.