Severus II, AE follis 27mm, Ticinum, 306 AD. 

SEVERVS NOB CAESAR, laureate head right.
VIRTVS AVGG ET CAESS NN, Mars walking right, holding spear
and trophy.
Mintmark TT. 

RIC 60a; Cohen 70.

Contributed by Editions V. Gadoury - Auction 2013, Lot 202, Nov. 2013