Constantine I 307 - 337 AD. Follis of 319 AD. Thessalonica Mint. 
CONSTANTINVS AVG, laureate, cuirassed bust right.
VIRT EXERC, Plan of a Roman camp, Sol standing in the 
centre, chalmys across shoulder, holding globe and raising 
right hand. 
Mintmark TS Gamma. 

RIC VII Thessalonica 66.

With permission of Numismatik Lanz, auction 102, 2001.