Obverse Dies: 2 Known
1864 Philadelphia dimes are found well struck and will exhibit surfaces that are typically prooflike or semi prooflike.
Two obverse and reverse dies are known for the 1864 date. Ahwash believed that both busines and proofs were struck from each set of dies. However I have only been able to locate business strikes from one of the die pairs.
Plate Coin: Fortin 102a, Gem Example of Ahwash 2, Fully Struck With Surfaces That Are Exceptionally Clean. Satin-Like Mint Luster and Lightly Die Clashed as Many of This Variety Are.
The 1864 Dime is a wonderful date with an extremely low mintage of only 11,000 coins. As in 1863, the San Francisco Mint was the big producer of Dimes this year. Despite the small mintage, the 1864 is an excellent value, especially in high grade. For instance, the 1864 and 1864-S Dimes are worth almost the same amount in MS63 -- even though the 1864-S has a much larger mintage.
Seated Liberty Dime researcher, Gerry Fortin, identified two die pairs for this date, both of which were used to strike Proof versions. One of the die pairs was later used to make the small number of coins for circulation. As expected, many of these coins are Prooflike and can sometimes be mistaken as Proofs (which are actually worth less than Mint State examples).
Jason Carter, sold privately in 7/2007 - Eugene H. Gardner Collection - Heritage 6/2014:30261, $17,625
Stack's/Bowers 8/2016:3079, $23,500
Tom Bender Collection