The final Proof Mercury boasted a series high Proof mintage of 22,329, and this is reflected in the certified population, being the most widely available in all grades including PR-68. NGC has even certified a handful of cameos, though not close to the quantities of 1939s.

The example to the left was sold by Stack's Bowers Galleries in the January 2012 Americana Auction, where it realized $1,092.