Possible Second Known Example?

427, Lot: 400. Estimate $100. Sold for $650. This amount does not include the buyer’s fee.

EGYPT, Alexandria. Julia Mamaea. Augusta, AD 222-235. Potin Tetradrachm (22mm, 10.89 g, 12h). Dated RY 13 of Severus Alexander (AD 233/234). Draped bust right, wearing stephane / Nike advancing left, holding a wreath, palm frond, and trophy; L I Γ (date) across field, palm frond to left. Köln –; Dattari (Savio) –; K&G –; Emmett 3216.13 (R5 = Karanis 614). VF, dark brown patina with traces of green. Extremely rare, with the Karanis hoard coin being the only published specimen. None on CoinArchives.

The addition of the trophy to this otherwise common reverse type is what accounts for its rarity.