Meta: Should Proof Varieties Be Separated From Non-Proof In Listings?

Well most sites list dies as they come in. Wexler's site is different. He listed his RPMs according to strength. He was involved with CONECA for number of years, but went his own way. Then he started his listing sorting the better ones first, then the minor ones, and then the newer listings. Coppercoins listed the RPMs with the CONECA numbers in the Orange RPM book:

Then continued with their listings. The Book 2 for CONECA was made after coppercoins and listed their numbers. But this listing are they they came in. Until 1968 all the Proof coins were made a Philly. Then when the mint in San Francisco re-opened, they helped out the with 1965-1974 business strike cents. With the Proofs starting again with 1968-S, there were also 1968-S-1974-S business strike cents. The Other denominations of Philly didn't start with the 'P' mintmarks until 1980. So to make rulings on coins, they have always went with the listing as they we listed by the mints. On a lot of the attributed coins they as a P or PR for listings for Proofs. But after 1968 pretty much most of the Proof were made in San Francisco. (West point and one example I can think of on the 1999-P SBA dollar was a proof and business strike that year) So this has been going on for years, before new collectors come in. Hope this helps a bit more.

But the numbers are already listed in an order that was set in stone years ago. How far back I can't tell you. But I think the Big DDO of 1955 more or less started stuff being saved. But people have always been save, especially when a new design comes out. People started saving rolls back as far as 1934. In fact one collector want to buy all of the 1931-S mints as they were going to be short in supply. But the mint wouldn't do that. The 1950-D nickels were going to have a short run that year and it was well known and most collectors bought rolls. So when you look at prices that year, the circulated ones are about the same as the BU coins. (So many were saved) When the 1955-S cents came out they were closing down the mint after that year, so again a lot of rolls were saved that year as well. So people get excited to hear new like that. Thus when the State Quarters came out, the craze took off again, now, its a dud. So things change. Perhaps a new attributer will start a new listing of what your talking about, but something are just set in stone and seldom change.