Second Known?

289, Lot: 402. Estimate $1000. Sold for $1600. This amount does not include the buyer’s fee.

Constantius Gallus. Caesar, AD 351-354. AR Siliqua (20mm, 2.73 g, 6h). Sirmium mint. Bare head right / Star within wreath; SIRM. RIC -; RSC -; Gorny & Mosch 115, lot 1817. VF, toned with some darker patches on obverse, flan crack. Extremely rare and possibly only the second known example.