Occupants of Essex and southern Suffolk, the Trinovantes seem to have become weaker in the second half of the 1st cent. BC, and were perhaps invaded firstly by the Catuvellauni from the north and then by the Cantiaci from the south. No uninscribed coins of independent Trinovantain rulers appear to have been struck after 40-30 BC. No inscribed coins can be unequivically attributed to a ruler of Trinovantian origin and from c. AD 10 all coins struck in Trinovantian territory were issued by Catuvellauni rulers, mostly by Cunobelinus. (Info from Chris Rudd's Ancient British Coins), and images below are courtesy of DNW unless otherwise stated. ABC numbers are 2326 to 2416.
BNJ Refs: ‘The biga gold of Cunobelinus’, R. Kretz, BNJ 80 (2010), 24-50
‘The Trinovantian staters of Dubnovellaunos’, R. Kretz, BNJ 78 (2008), 1-3
‘Attribution of the Ancient British coins inscribed DIAS or DEAS’, P. W. P. Carlyon-Britton, 8 (1911), 1-7
‘A fine Ancient British coin from Colchester’, D. F. Allen, 28 (1955-57), 400-03, pl.