Constantine I AE Follis. 

Obv: CONSTANT-INVS AVG, helmeted, cuirassed bust left
Rev: VICTORIA LAET PP, two Victories holding shield inscribed 
VOT PR over altar. Altar type Helvetica 1a (plain tall 
altar); Mintmark: _TR in ex.

RIC VII Trier 234 var, rated R5. (Types with the short 
reverse legend were struck only in Trier and are all 
extremely rare. There is no listing for bust facing left, 
nor with this obverse break, but the coin is 
undoubtedly genuine).

Contributed by Dane for Pete Clegg (biffabacon10), June 2009