Watch List notes:

MYSIA, Lampsakos. Circa 500-450 BC. AR Didrachm (16mm, 6.79 g). Forepart of Pegasos right / Quadripartite incuse square. Baldwin, Lampsakos 1; SNG BN –; Boston MFA 1584; Prospero 463 (same die and punch); NAC 88, lot 409 (same rev. punch). VF, granular surfaces, a couple light marks. Extremely rare, only two in CoinArchives.