The 1948-D Franklin Half is the first coin struck at the Denver Mint for this series. It's mintage is just over 4 million so not a rare date but also not a common date. It is only common in circulated grades and up to MS62 grade more or less. Examples in MS63 and even MS64 can still be found in rolls or mint sets. Examples in MS65 have probably already been pulled from rolls. In MS66 condition they are very scarce with several hundred still available at a premium. In MS67 condition they are truly scarce with less than dozen known and none being finer.
Heritage 7/2015:3172, $12,925