The presidential medal sets listed on the PCGS site are comprised of medals struck by the US Mint as part of its "Presidents of the United States" series. PCGS is not currently encapsulating similar medals from the Franklin Mint or other private mints.
The medals have been struck in bronze in the small (1-5/16") size since 1972 - the "miniature" series was initiated to help draw young collectors into the field of coin and medal collecting. In the beginning, the medals cost $0.50 each, their current price is $6.95.
The entire run of medals is not currently available from the Mint, but they are from time to time. The Mint usually keeps a few medals in stock - most recent presidents + the perennially popular George Washington, Abraham Lincoln and John F. Kennedy.
If you are interested, you should be able to assemble a complete set of the medals via
ebay. One note, recent issues have all been struck at Philadelphia, but earlier issues were struck at Philadelphia and Denver (the Denver pieces have a "D" mint mark).
Hope that helps!
Collecting history one coin or medal at a time! (c) commems. All rights reserved.
Edited by commems
10/21/2014 5:12 pm