Watch List notes:

EGYPT, Alexandria. Saloninus. As Caesar, AD 258-260. Potin Tetradrachm (22mm, 11.46 g, 11h). Dated RY 6 of Valerian I & Gallienus (AD 258/9). [Π]O Λ[I] KOP CA OVAΛεPIANOC K CεB, bareheaded, draped, and cuirassed bust right / Laureate bust of Zeus right, slight drapery; L ς (date) across field. Köln 3004; Dattari (Savio) 5370; K&G 93.7; Emmett 3784.6 (R2). VF, dark brown patina, a touch of porosity.

Ex Glendining's (11 July 1990), lot 59 (part of, this coin illustrated on Pl. I).