COIN (ROMAN)
A silver Roman denarius coin of. C. Sulpicius Platorinus struck in 13 BC during the reign of Augustus.  Obverse: bare head right, CAESAR [AVGVS]TVS.  Reverse: bare head right, M. AGRIPPA PLATORINVS [IIIVIR].  It is in a very fine condition but has been broken into three pieces and glued together.  It weighs 2.85g and has a die axis of 9.  Mattingley and Sydenham, Roman Imperial Coinage, Volume I, page 73, ref. 408.

This coin is part of a hoard of 5 Roman denarius coins, Object IDs ESS106093, ESS109370, ESS10C6B4, ESS10E334 and ESS10F9E3.  The group would appear to represent at least part of an early denarius hoard of the mid-first century AD.  Such hoards have been considered recently by Orna-Ornstein who notes a concentration in the eastern counties of England, especially Norfolk and Suffolk.  It is generally believed that these hoards were deposited at the time of the Boudican revolt of AD 61/2.  Given the proximity of Mersea Island to the colonia of Colchester sacked during the uprising it is certainly a possible explanation in this case.  Orma-Ornstein, J. ‘Early Hoards of Denarii from Britain’, in Coin Hoards from Roman Britain, Volume X, pages 23-9, figure 1. 
Ruler: Augustus
Denomination: Denarius (Empire)
Material: Silver
Obverse: Bare head right
Obverse legend: CAESAR [AVGVS]TVS
Reverse: bare head right
Reverse legend: M. AGRIPPA PLATORINVS [IIIVIR]
Dated: -13.0 to 
Weight (g): 2.85
Completeness: Complete
Parish: East Mersea
District: Colchester
County: Essex
Region: Eastern
Discovery method: Metal detector
Notes: This coin was recorded before a Finds Liaison Officer was appointed to Essex and the object description is a transcription of the record made at the time.  This record was published in Wise, P. 2002. ‘Recent finds from Essex reported to Colchester Museums 1998-2000’, in Essex Archaeology and History 33 (2002), page 388, ref. 2.  All of the coins from this hoard were acquired by Colchester Museums and were Accessioned under COLEM: 2000.45-49 (this particular coin is 2000.46).