I purchased one from viz a little while back. It's an exceptional coin and I like the hidden storage feature. For anyone that wants long-term microSD storage using a coin like this, I recommend Swissbit:
https://www.digikey.com/product-detail/en/swissbit/SFSD0512N1BM1TO-I-ME-221-STD/1052-1202-ND/5762188These are basically military-grade microSD cards that should hold information for at least 10 years. Most USB / microSD flash drives will degrade and not retain their memory for anywhere near that length of time.
Nice info, I'll need to get me one of those special cards for long term storage. I'd have to imagine there are better prices though, $20/512mb?
Agreed, they are impressive and actually work when fitting together/opening with the tool which I didn't expect.
They were sold on ebay and I believe through a website that was built for the coins.
I believe the website was coldco.in if I recall. These are pretty rare.
That's accurate, just confirmed the address via an old bookmark I had.