Hohlpfennig of the Duke of Opole, Bolko V, minted ca. 1440-1450 at the mint in Oberglogau.
Silesia, Duchy of Oppeln, Boleslaus V, Hohlpfennig ca. 1440-1450, Oberglogau mint
Obverse: Eagle turned heraldically to the left, arms bent inwards, three feathers in each wing, three feathers in the tail
Diameter 15 mm, weight 0.17 g