Watch List notes:

Nero. AD 54-68. Æ As (26mm, 10.01 g, 6h). Balkan mint (Perinthus?). Struck circa AD 64-66. Laureate head right / Eagle standing facing, head right, on globe; S C flanking. MacDowall, "Two Roman Countermarks of AD 68," NC 1960, p. 108, III; RIC I (old edition) 439; RIC I (new edition) –, but see discussion on pp. 186-7; RPC I 1762. Near Fine, somewhat rough surfaces. Rare, with the majority of known specimens housed in museums.

This reverse type is derived from the Divus Augustus Pater series. Other asses from this mint adopt the Neptune type of Agrippa struck under Caligula.