A very nice piece. Light rim wear.
Patina, tarnish.
Obverse: Polish-Lithuanian-Volyn coat of arms shield placed on a grave with a cross and crown of thorns, in the rim a legend:
TO THE RUSSIAN BROTHERS MURDERED BY THE MOSCOW TSAR FOR THEIR LOYALTY TO THE CHURCH AND POLAND;
Reverse: an open book with the inscription MARTYROLOGY POLAND / LIBERTY and the names of a dozen people, around PODLASKIE AND LUBELSKIE VOIVODSHIP / POLUBICZE - DRELÓW - PRATULIN
Bronze, diameter 64 mm, weight 100.7 g.