Watch List notes:

ANCIENT COINS, Roman, Marcus Aurelius (AD 161-180), Æ Sestertius, struck AD 171, IMP M ANTONINVS AVG TR P XXV, laureate head facing right, rev VOTA SVSCEP DECENN II / COS III, S-C, Marcus Aurelius, veiled, standing left, sacrificing over a tripod and holding a scroll, 20.97g, 12h (RIC 1017; BMC 1402; C 1037; RCV 5020). Dark green patina, nearly extremely fine.
ex Spink Numismatic Circular, August 2007, vol CXV, no.4, item RM3525

Estimate: £450-550