Celtic. The Iceni. Mid-Late 1st Century BC. AR Unit (14mm, 1.22 g. Regular Face/Horse type, attributed to Queen Boudicca. 

Head right; branch behind; triskeles-like symbol before.
Horse right; wheel above, lozenge below. 

Hobbs 3621; Van Arsdell 790-1; SCBC 434. 

From CNG e-Auction #66, June 2003, re-used By permission of CNG, www.cngcoins.com.
CNG 66, Lot: 150.