We auction an interesting set, in reverse 170, 180 and 190 degrees. A rare vintage in reverse. A very rare coin, struck with a 170 degree reverse stamp. The eagle on the obverse in relation to the images on the reverse upside down - the so-called REVERSE. A beautiful piece, mint luster, details untouched by circulation. In collections of coins of the last century, struck by machine in great quantities, it is not the quantity of coins that indicates the quality of the collection, but the number of gems in it. There are no higher grade gems than low-volume SAMPLES, and even rarer to them, created by accident, interesting minting errors (offsets, reverses).