Celts Of Britain, Iceni, 45-50 AD. AR silver unit. 

Obv: Double crescent pattern with two dots in centre.
Rev: Celticized horse right with three dots on shoulder, dot within rayed circle below; (ED below, off flan) 

VA 756-1, rare. BMC 4283-4296.

Contributed by Frank Robinson, fsrcoin.com, Sept. 2011.