Quote:
The pre 1936 proof coins were ordered directly from the Mint and were sold as singles so if you didn't have to buy all of the denominations available if you didn't want them all.
Make that pre 1950. The 1936 to 1942 coins were also available individually. And some of the early years pre 1880 were only available in sets. Then at times they sold gold sets, and silver sets which contained the one cent through the silver dollar. Then they had the minor set that only had the base metal coins. In 1883 they sold a special set of the three different nickels for that year. Then you have the problem on the mintage figures in known was that the number struck or the number sold? And if it is the number struck were they all sold and if not what happened to the remainder? Sometimes they were melted down and sometimes they were just released into circulation. early proofs can be a very complicated subject.