Watch List notes:

MYSIA, Parion. Circa 280-275 BC. AR Tetradrachm (31.5mm, 16.88 g, 1h). In the name and types of Alexander III of Macedon. Head of Herakles right, wearing lion skin / Zeus Aëtophoros seated left; in left field, bull butting left above monogram; monogram below throne. Price 1465; Seyrig, Parion –; SNG BN –. Good VF, toned, some scratches. Extremely rare, possibly unique, none in Pella, CoinArchives, or ANS photofile.

From the Colin E. Pitchfork Collection, purchased from Baldwin's (their stock ticket included).

This is reportedly the "in commerce (1989)" piece that Price refers to in his corpus.