Awhile back I read a thread somewhere on here that some company did just that.
i.e ...actually engraved the priv key with a sealed hologram or some such thing and sold
the various bitcoin valued coins they fabricated.
And guess what ended up happening?
Not too hard to figure out...lol
You mean the Casascius coins? Lots of those still out there unswept, they are legit.
Not really sure actually. A random thread here a couple years ago.
Coins got swept . Company owner claimed inside job and vowed to
find culprit and repay customers. The usual story.
Never heard how it panned out in the end tho.