Jagiellonians, Sigismund I the Old (1506-1548), half-penny 1520, mint Vilnius
A RARE variant of the half-penny with an error in the word SIGISMVANDI - the letter N reversed, as well as the remaining N reversed in the words
MAGNI and LITVANIE, and after the latter word 5 rings - a five dot!
Silver, weight 1.09 grams, diameter 20 mm