Watch List notes:

EGYPT, Alexandria. Valerian I. AD 253-260. Potin Tetradrachm (22.5mm, 11.76 g, 12h). Dated RY 7 (AD 259/260). Laureate, draped, and cuirassed bust right / Alexandria standing facing, head left and wearing turreted crown, holding bust of Serapis and scepter; L Z (date) across field. Köln 2878; Dattari (Savio) 5145; K&G 88.41; Emmett 3703.7. Dark brown to black patina with traces of red. VF.

From the Stein A. Evensen Collection. Ex Classical Numismatic Group Electronic Auction 229 (10 March 2010), lot 376.