Mint in Rome Today Roma, and still in Italy! :_)
|During the reign of Probus the mint in Rome operated from 7 officinae (workshops).
The first issue was marked with XXI and a Greek officina numeral in exergue or in field.
Subsequent issues were marked with the letter R followed by Greek numerals from A to Z, often with symbols dividing the city letter and the numeral. The final ussue has the letters of the word AEQVITI in place of the symbol.
Table by Jérôme Mairat. Translated and used with the permission of the author.
Original article available at iNumis