RUSSIA. 20 Kopek, 1830-CNBHT. NGC MS-64. C-158; Bit-139. No eagle's tail. RARE!!!  Excellent old envelope toning with hints of caramel. Very well struck. Only one at this grade, with only three higher at NGC. NGC MS-64. From the Demarete Collection.

Ex. August 2014 Stacks Auction.