Nero AE sestertius. Lyons, AD 65. 23.26 g.

NERO CLAVD CAESAR AVG GER P M TR P IMP P P, laureate head left, globe at tip of neck.
PORT AVG (inverted in exergue) S-C, two curved moles 
enclosing eight ships in the harbour of Ostia, statue of Neptune on lighthouse above,  Tiber reclining left below. 

RIC 441; McDowell 427. 

Rare, rated R2.

The number of ships shown in the harbour in this type varies, but the four important ones are the two left and 
right of the lighthouse, one entering the harbour under full sail and the other being rowed out of the harbour. 

With permission of Numismatica Ars Classica auction 114, Lot 616, May 2019.