Watch List notes:

DIOCLETIAN, (A.D. 284-305), gold aureus, issued 284, Antioch Mint, (4.63 g), obv. laureate draped bust of Diocletian to right, around IMP C C VAL DIOCLETIANVS P F AVG, rev. around VICTORIA AVG, Victory advancing right holding wreath and palm, mintmark SMA in exergue, O in field, (S.12584, Cal. 4570, RIC 320, C.272). Light marks in obverse field to right of bust, otherwise good extremely fine with mint bloom and rare.

Ex Numismatik Lanz Auction 163, (lot 455).