Obverse
FR. MATTHAEUS FESTING M.M.H.H. in circular legend around the bust on the left of H.M.E.H. Fra’ Matthew Festing, 79th Prince and Grand Master of the Sovereign Military Hospitaller Order of St. John of Jerusalem of Rhodes and of Malta, in ceremonial conventual dress.

reverse
Statue of Giovanni Battista Piranesi (1720-1778) kept in the Church of Santa Maria del Priorato all'Aventino where he is buried. On the left, 10, on the right GRANI and the date 2011.

Weight
8 grams

Diameter
30 millimetres

Edge
ribbed edge