Egypt, Alexandria. Domitius Domitianus, 296-298. Tetradrachm. (Bronze, 21.97 mm, 10.56 g). Dated RY 2 = AD 297/8. AOMЄTIANOC CЄB Draped and cuirassed bust right. Rev. Draped Serapis bust left wearing kalathos on head; L B (date) across fields. Geissen -. Milne-.BMC 2625 + Plate XIII (reverse illustrated). Dattari-Savio 10820 (this specimen). Emmett 4243 (5). Traces of silvering on obverse. Second known and unique specimen in private hands. Ex Giovanni Dattari collection. Ex NAC, Auction Q, 06.04.2006, lot 2048. We are fast approaching the sunset of the glorious Egyptian monetary autonomy embodied during the first three centuries of the Roman Empire by the mint of Alexandria. My paper “Testimonianze sulla fine della monetazione autonoma alessandrina (296-298 d. C.)" presented at the 13th International Congress in Madrid in 2003 (see bibliography), investigate further the topic. The suspension of the autonomous coinage in August 296 AD and the unpopular monetary and fiscal reforms decreed in 296-297 AD by Diocletian, gave rise to the Alexandrian revolt led by Domitius Domitian, who took possession of the mint and proclaimed himself sovereign, minting in his short period in power (May 297-April 298 AD) coins first in the new ‘Latin’ genre and then, in his second official year in power (August 297-April 298 AD), of the autonomous type of the earlier tradition, in an extreme but now futile attempt to restore it. To this very rare series marked L B = year 2, belongs our tetradrachm, of which only two specimens are known, one kept in the British Museum in London and the other, the only one in private hands, which comes from the distinguished collection of Giovanni Dattari, here in this collection. The presence on the reverse of the bust of Serapis Soter, the greatest Greek-Egyptian deity and protector of the capital city of Alexandria, should have supported the revolution of Domitius Domitian, but history has instead ordered the restoration of the Tetrarchy and the new economic-social course imposed by Diocletian.