Watch List notes:

EGYPT, Alexandria. Trebonianus Gallus. AD 251-253. Potin Tetradrachm (23.5mm, 10.36 g, 12h). Dated RY 3 (AD 252/253). Laureate, draped, and cuirassed bust right / Serapis standing facing, head left, holding scepter and raising hand; L Γ (date) across field. Köln 2838-9; Dattari (Savio) 5118; K&G 83.10; Emmett 3674.3. Dark brown surfaces with traces of red, some minor roughness. VF.

From the Stein A. Evensen Collection. Ex Classical Numismatic Group Electronic Auction 184 (19 March 2008), lot 145 (hammer $230).