Caracalla AE28 of Anchialus, Thrace. AD 197-217. 11-59 g.

AYT M AYRHL ANTWNEINOC, laureate, draped and cuirassed bust right.
OYLPIANWN AGXI-ALEWN, galley with oarsmen and pilot to left, with emperor standing left on deck, holding patera and spear. Dolphin in upper left field.

Varbanov 354 citing AMNG II 540 (galley in AMNG described as having a full sail).

With permission of Numismatik Naumann auction 127, Lot 403, April 2023.