Extremely popular due to its major-rarity silver dollar cousin and to the fact that the 1804 quarter is quite scarce. Only 6,738 coins were struck and very few survive in sound condition. It's much scarcer than the 1796 quarter as few were saved.
Barber half collectors know that the Micro O is the rarest widely-collected issue in the series. There are only a few dozen known in all grades and even low grade examples are really scarce and shouldn't be passed up. CAC approved for quality and eye appeal.