Watch List notes:

ITALY, Papal (Papal State). Gregory XIV. 1590-1591. Glass Intaglio (34mm, 14.52 g). Made from medal obverse. From obverse die of Niccolò De Bonis. Of possible Venetian manufacture, 16th-19th century. · GREGORIVS · XIIII · PON · MAX, bust right, wearing camauro and mozzetta / Blank. Cf. CNORP III 915 (for obv.). Blue-striped clear glass, a couple of tiny chips on reverse. As made. Unusual.

From the Peter Napoli Collection.