nice find... these are the only ones known according to... http://www.lincolncentresource.com/wideams.html 1. 1992 Close AM - extremely rare 2. 1992 D Close AM 3. 1998 S Close AM 4. 1999 S Close AM 5. 1999 Wide AM 6. 1998 Wide AM 7. 2000 Wide AM - least rare
Yes, on the cent coins, no letter below the date denotes being minted in Philadelphia, a D would indicate Denver and an S would mean San Francisco. I think most S mint coins (at least from the 70's on) were proof. Some years there are some that were made for general circulation, I always pause when I find one.