Watch List notes:

Hadrian, AD 117-138. Gold Aureus (7.40 g). Mint of Rome, struck A.D. 124-8. HADRIANVS AVGVSTVS, laureate bust facing right, with slight drapery on left shoulder. rev. COS III, Hadrian on horse prancing left, raising his right head and holding a spear. RIC 188 var.; Calicó 1229 (this reverse die); Biaggi 596 var.; BMC p. 294, note 439. Attractively toned over luster, a very rare reverse type of Hadrian riding left, an impressive coin. Nearly Extremely Fine. Estimated Value $20,000