One of the rarest varieties of Alexander's Lithuanian half-penny.
Coin with an error in the king's name - the second letter A is missing - it is ALEXNDRI instead of ALEXANDRI.
The error is very highly estimated in the specialized catalog of the Huletski-Bagdonas duo (with a rarity grade of RIII - equivalent to R7 on the Czapski scale). Known to the makers from only one stamp (this1), among dozens of varieties of these half-pennies.
Variety with Renaissance-Gothic inscription on both sides.