Size= 30mm, weight=12.99 gm. by Gian Federigo Bonzagni. Dated 1572.
Obv: GREGORIVS XIII PONT MAX AN I/ P P , bust left, wearing camauro and mozzetta.
Rev: VGONOTTORVM STRAGES 1572 (the massacre of the Huguenots), massacre scene.
Ref: Mazio 110; Lincoln 697-9; Whitman 14.
Grade: UNC, dark brown surfaces. A later striking from original dies, struck under Pius IX re-mint of early Vatican medals order.