Celtic Britain, Iceni, 45-50 AD. AR silver unit. 0.95 g. 

Double crescent pattern with two dots in centre.
Celticized horse right with three dots on shoulder, three dots and inverted V below. 

VA 756-1; BMC 4283-4296.

With permission of Harlan J. Berk, Ltd. - Buy or Bid Sale 211, Lot 51, June 2020.