Serious error in the legend - REG instead of REX on the obverse, noticed by the mintmaster and corrected on the stamp by punching the letter G into the letter X. An unlisted variety in the literature. It is not even described in Nieczitajlo's detailed catalog of varieties, which takes into account other punctures to which he gave degrees of rarity: from R2 for popular punctures, to R6 for rare ones. It is worth mentioning that R2 in Nechitaylo's catalog denotes a coin known for up to 100 pieces, and R6 for up to 12 coins. Very rare coin
