Note: This coin was previously mis-described as RIC 148.
RIC 148 does not have a break in the reverse legend.
This coin is a RIC 181 var. 
The information has been corrected below.

HJB-Constantine II as Caesar, Follis 
Item number: 150048568778  
 
Winning bid: US $20.00   
Ended: Oct-26-06 09:44:31 PDT 
Seller: hjb-ancientcoins

Constantine II as Caesar, Follis   
317-337 AD, Follis, Lugdunum, 321 AD, 3.20g. 
 
Obv: CONSTANTINVS IVN NC, laureate, draped, cuirassed bust right, seen from the back
Rx: BEATA TRAN-QVILLITAS, globe on altar inscribed 
VO TIS XX in 3 lines, 
3 stars above. 
C-R across fields.
Mintmark PLC
Durrington hoard 3620, RIC VII Lyons 181 var (rev break, altar legend break, mint mark)

VF+, a bit porous