Roman lead tessera. 1st-2nd c. AD. 14 mm, 1.67 g.

Jupiter seated right, holding patera and sceptre.
ME-D (or ME-O), Mercury standing fully front, looking left, holding purse and caduceus.

BFA 73, 1717. Not in Overbeck, Ruggiero, Ficoroni etc. 

With permission of Bertolami Fine Arts, auction 73, lot 1717, August 2019.