This one is really rare - never heard about it before.
The original thread seems to be legit but who knows if this card is? The website of the manufacturer is gone and whoever want to buy that card has to trust you and the vanished manufacturer that there really is the correct private key under the hologram.
Well, it's a $7300 question!
Half right. No need to have to tryst blazed if that was the case it would be the same for casascius coins or any other physicals.
An original bitbill does have to have trust in the original manufacturer again just like any other created constructed physical with loaded value. Would think they would have been bled already if that was going to be the case, as almost 6 years has past and havent heard of one instance.
These are a unique piece and will surely be in whatever bitcoin museum pops up if one ever does. GL blazed, wish i had the loose funds at this time to make an offer.