AE anonymous quadrans, AD 81–96, time of Domitian to Antoninus Pius. 17 mm, 3.04 g. 

Draped bust of Mercury right, wearing petasos and with caduceus over shoulder. 
Rooster standing right, S–C across lower fields.

RIC 29; Cohen 35. 
Very rare.

With permission of Numismatica Ars Classica - Auction 146, Lot 2328, May 2024