I was given this in a bag of coins, and it is REALLY shiny. have been reading up on proofs, but am still confused at the matter. Is this one? (Please mind the dust/hairs, they are under the glass of my scanner, and I cant get them out.)
For 1973 the only S mint marked coin is indeed a proof for that year. Only memorial cents had mint state issues from SanFransisco.
You can get a Red Book at any Barnes & Noble book store for around $10. http://www.barnesandnoble.com/w/gui...=9780794833497&itm=2&usri=red+book+coins+2012