Crispus	AE follis of London, AD 319-320. 20 mm, 2.8 g. 

FL IVL CRISP-VS NOB C, helmeted, laureate, draped and cuirassed bust right.
VICTORIAE LAETAE PRINC PERP, two Victories standing facing one another, holding together a shield inscribed with VOT PR set on altar decorated with star in wreath.(Altar Type 3c).

Mintmark PLN. 
RIC VII London 175 (this coin); PAS 775071.

Image courtesy of the British Museum, inv. no.