Do you have exact info how many of these was made? I think 200 of gilt, 200 of non-gilt.
https://casascius.uberbills.comI'd guess probably closer to 300 gilt, 200 non-gilt. The non-gilt versions appear to be more rare judging by the auctions I've observed here over the years, but I only have my personal beliefs to back that up. Did Casascius ever release actual numbers? I'd be curious.