1787 Connecticut Copper. Miller Reverse Z.13 Brockage. Unique. Fine-12 (PCGS).131.0 grains. Dark chocolate brown with lighter brown devices on the normally struck reverse, the exact opposite on the reverse: dark chocolate brown recesses and lighter brown fields. Excellent eye appeal and good contrast despite the relatively low grade. Free of all but the most minor problems, including a couple small fissures and a bit of harmless dark encrustation. Well centered on both sides, with two good dates. Randy Clark and Bobby Martin’s research on brockages captured a census of 54 different pieces, only 16 of which are reverse brockages. Bobby’s lovely brockage of Miller Reverse Z.15 called Fine Details by PCGS brought $5,280 in our November 2019 Baltimore Auction. An appealing example of this rare class of error, a coin that saw significant circulation before being found and saved.From the E Pluribus Unum Collection. Earlier from Pine Tree Rare Coin Auctions’ John Carter Brown Library of Brown University Collection sale, May 1976, lot 603.
