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A, the first letter of the Latin Alphabet, which consists of 21 letters, very often occurs as a single letter on Roman coins. Sometimes it serves as the initial of a City, an Emperor, a Consul, &c. Sometimes it seems to be used as a mint-mark, and to have many other significations.
A. is written in various ways on Roman Consular coins. - see Eckhel, Doct. num. vet., vol. v. p. 73.
A. - Aulus, a prenomen. A. VITELL. Aulus Vitellius.
A. Aerarium. AD. A. D. Ad aerarium detulisset: concluding letters of inscription on denarius of Augustus. - Rasche, Lexicon rei num. vet. - A. in the exergue denotes the first mint, as ANT. A. coined at Antioch, in the first mint. - Akerman, Numis. Manual.
A. or AN. Annus. - See A N F F