The Catuvellauni, ‘men good in battle’, were one of the two main north-Thames tribes, concentrated in Hertfordshire and including parts of seven surrounding counties. They were probably the most powerful tribe in Britain when their king,Cassivellaunos, commanded the British coalition against Caesar in 54BC. Mint-sites at their capital, Verlamion (St Albans), and maybe Braughing.

Tasciovanos Sea Horse. c.25 BC-10 AD. Bronze unit. 15mm. 2.14g. Head facing right with long hair and beard./ Fish-tailed sea horse facing left, VIIR below. ABC 2658, VA 1707, BMC 1714-21S 243. CCI 05.0374 (this coin). Very fine, lovely dark patina, clear sea-horse. Ex Anthony Levine collection, bt. Chris Rudd (2017), ex John Lumley collection, bt. Chris Rudd (2005), ex S Kelly collection, bt. CR (2001). Found Essex, 2000. RARE.                         Was £100. Now only £85