Can anyone tell me how the mint (or Congress) determines how many Proof (Silver Proof sets, etc.) sets will be minted for the year?
My guess (and it's a total guess) is that it's an internal treasury decision based on how many unit they intend to sell. Just a couple of months ago they started selling more sets of the Westward Journey coin and pouch sets after they had initially sold out, much to the chagrin of people that were reselling them at a profit. I found this about commemoratives but couldn't find anything about proof or mint sets. http://www.usmint.gov/foia/index.cfm?flash=yes&action=cc00report
