Roman dating system
These days are the Kalends, the Nones, and the Ides. The Ides (Idus, "Id.") fall mostly on the 13th, but on the 15th in those months just mentioned. Roman dates were given by using references to three sacred days which fall at roughly the same time each month. The Nones (Nonae, "Non.") fall mostly on the 5th, but on the 7th in March, May, July, and October.The traditional date for the foundation was the year that we now call 753 BC. In the later Roman empire years were sometimes numbered by reference to 'indictions' (15-year periods instituted by Diocletian for tax purposes).Locally, the regnal years of kings were often used.With over 140,000 coins on the database, Roman coins make up the largest single artefact type recorded with the Portable Antiquities Scheme.In recent years there has been a major push to record all coins found, not just those in good condition.
Following this, the referenced sacred day and month was placed in the feminine accusative plural.
Years were given in one of two ways: either with reference to the year's consuls, or with reference to the year of the founding of the City. When the date to be given is one of these three sacred days (Kalends, Nones, Ides), the date is given as the day and month, both in the feminine ablative plural.
When using Consular dating the names of both consuls were given in the ablative case, followed by the word "consulibus (cos.)." So, 63 BCE would be "M. Therefore, "Kalendis Aprilibus," "Nonis Septembribus," "Idibus Maiis." Dates were given by counting, inclusively, backwards from the next reference day, putting this number, ordinally, in the accusative case, after the words "ante diem," excepting one case, which is the day before the referenced day, in which case rather than the number and "ante diem," the word "pridie" was used instead.
It is important to emphasise that each Roman coin shares equal archaeological value, irrespective of its metal or condition.
Therefore, all Roman coins from a particular site, field, parish..be studied and recorded.