so these were made in China? Under permission from Caldwell or no?
Only 5 1000 BTC coins were minted so either these were done himself or Mike did them as some sort of memento.
It looks like someone quoted above stated there are 50 Series 2 coins made, not sure if that is accurate.
I believe these numbers to be correct. Unless of course it was coblee who was quoted saying that there were 50 minted, I'm sure he has much more information on it than any of us.
http://www.spotcoins.com/bitcoin/casascius