Rare medal by A. Madeyski. According to available archives, currently the 3rd piece listed on the collector's market.
Corrosion pitting on the obverse and tarnish on the reverse in places, as seen in the photos. Other than that, no comments, overall presentation good.
Obverse: head of Mickiewicz en face, left 1798 ADAM MICKIEWICZ 1855, right signature ANT MADEYSKI ROME 1913
Reverse: lyre in wreath, rays reaching a wreath of thorns in the background.
Bronze, diameter 55 mm, weight 61.1 g