Heritage Auctions - A Great Source

After a lot of trouble getting my email account to allow messages through from Heritage and not trash them as spam on the front end, I finally got registered on their site. I will probably bid on a few things that I need, but the huge advantage for me will be a steeper learning curve. I have been buying and selling coins since 1979 and collecting them before that, but when I have long periods of inactivity, I lose track of current market grading standards and relation to price (it seems to me that grading standards do shift with market demand even among the pro services). I recently bought a circulated 1875-S Twenty Cent Piece, uncertified, after a long search. I thought it was a problem free coin, perhaps, but not sure, maybe lightly cleaned long ago and retoned naturally. Anyway I liked it! After searching and enlarging thousands of Twenty Cent Pieces on Heritage, all of them slabbed at the grade I placed my coin at. I learned that over 90% have been cleaned and many are damaged and sold for the same or more as my coin. Now I like it more after seeing in detail what is out there on the market! By enlarging the pictures I can see in detail what the professional graders have used as criteria. What a great market and grading tool for the collector!