🧧🧧🧧The Bitcoin coins that are widely and commonly recognized as being legitimate were produced by Casascius coins starting in 2011. The lowest denomination is 1 BTC, and the materials include brass, gold, and silver.
They also have a single Casascius coin worth 1000 BTC—there are only 6 in the world. You could say it’s the “most expensive” coin in the world. When Bitcoin crazily surged in 2017, this coin was worth an astonishing 100 million.