The 1792 half disme is always in great demand as a type coin. With only one die pairing for this date, however, there is only a limited impact from variety collectors. The Flowing Hair coins of 1794-95 and the Draped Bust types of 1796-1805 have a small following of strict date collectors, and the key to this series is the very rare 1802 half dime, of which about 35 examples are known from a single die pairing. There are a handful of specialists who seek the better varieties, but the primary market for half dimes of 1794-1805 is found in type collectors. The Capped Bust Half Dimes of 1829-37 are most often sought as single type coins, but there exist quite a few date collectors, too. Collecting this series by varieties was never widely popular, but publication of the Logan-McCloskey book may change that. Many varieties that are available in circulated grades become very elusive at or near the mint state level. NGC will assign Logan-McCloskey (LM) numbers to all early half dimes from 1794 through 1837. LM numbers begin anew with each date, so that the first listed variety for each date is always LM-1. Successive die marriages within a single die pairing are offset with decimal points. For example, 1829 variety 6 is identified as LM-6.1, LM-6.2 or LM-6.3.