Obverse Dies: 3 Known
Two obverse and reverse business strike die pairs are known for 1848 Philadelphia coinage along with a separate die pair for proof coinage. The plate coin is business strike Obverse 2 with a very high level date.
Plate Coin: Fortin-101, Bright And Satiny Textured Surfaces, Reverse Showing Diagnostic Die Cracks for Leftover Reverse of 1847
Production of 1848 Dimes took place only at Philadelphia and was limited to 451,500 circulation strikes. Even so, this was a significant increase over the previous year's mintage, thus this date can be found with relative ease for prices not too much over those of a common type coin. Mint State examples are scarce but not rare, and several nice MS64's exist. The best examples are MS65's, but only a few exist at that level.
Gerry Fortin identified two different die pairs for the circulation strikes and one die pair for the Proofs. All seem to have used the same date logotype, thus references to a Medium Date are confusing -- they are all the same size.
American Numismatic Rarities 9/2003:237, $7,360 - Eugene H. Gardner Collection - Heritage 5/2015:98227, $6,462.50
Heritage 4/2015:3840, $4,935