Republic, Anonymous Aes Grave Quincunx. ca 280 BC. 187.0 g. 
Hatria mint. 

HAT beneath head of Medusa emerging left from a murex shell, angular S above.
Pegasus flying right, five dots below.

Vecchi (2013) 237; HN Italy 12.

With permission of numislanz.de, Auktion 102, lot 357