Domitian Æ As, 10.60g Rome mint, 85 AD RIC 385 (C2). BMC 358. Obv: IMP CAES DOMIT AVG GERM COS XI CENS POT P P; Head of Domitian, laureate, bearded, r., with aegis Rev: SALVTI above, AVGVSTI below; S C in field; Altar Acquired from Praefectus Coins, August 2019. The SALVTI AVGVSTI altar type was first introduced on Domitian's aes coinage in 84 after a brief hiatus of the Senatorial mint's production in 82-83, presumably for re-organisational purposes. The structure on the reverse has been traditionally described as an altar, however, Marvin Tameanko has convincingly argued it is actually a sacellum, or small shrine. He states the steps at the base leading to two doors with handles are overwhelming evidence that the structure was much larger than an altar. As far as the shrine's significance - H. Mattingly in BMCRE II interprets the type as commemorating the Senate's dedication of an altar shrine celebrating Domitian's safe return from the Germanic Wars of 82-83. Alternately, the shrine may have been dedicated as an appeal to Salus for the emperor's continued good health. In any case, no trace of the structure has survived antiquity. This As with its aegis, large flan (30mm), and elegant idealised style are all hallmarks of the new direction introduced after the Senatorial mint's overhaul. A 'tyrant' such as Domitian had no business producing such beautiful coins. Feel free to post your altar, shrine, or Salus types.