1853 United States Assay Office $10.00
K-15, Round, 884 THOUS.
This is a very rare issue, believed to have been struck for only about one week in 1853. When Augustus Humbert initially had the dies prepared for this issue, the direction was for them to state the fineness as 880 THOUS, and they were changed to 884 before any coins were struck. Evidence of this alteration can be seen on this coin, as the area of the ribbon around the 4 shows a polished finish, much different than that seen on the rest of the ribbon.
The example to the left was sold by Stack's Bowers Galleries in the Winter 2014 Baltimore Auction, where it realized $38,187.