Do you know about physical bitcoin?

One of the 2011 variants. These are silver coins from 0.1 to 25BTC, 1000BTC is already a gold coin. They are essentially minted coins that have a holographic address sticker on one side, with an access key on the back of the sticker.
How many have been issued and how many have been opened is under a spoiler. In fact, such a coin should be worth much more than its face value in bitcoins, given the still limited edition.
The only question is, who needs them like that?

Found more. Why has the coin issue stalled? First, they are produced by enthusiasts, not mints. And they usually use a 3D printer. So anyone can print one. But. FinCEN defines such actions as money transfers, and that already required federal registration.