Constantine I, as Caesar. 307 AD. AR Argenteus (3.28 g). Trier mint.

CONSTANTINVS NOB C, laureate head right.
VIRTVS MILITVM, campgate with six layers, four turrets, 
no doors.

Mintmark PTR.

RIC VI Trier 638; RSC 706.
Rare. Rated R4. 

Rare.
From the Jürgen K. Schmidt Collection. Ex Busso Peus Auktion 
342 (8 November 1994), lot 553; Hess-Leu Auktion 41 (24-25 April 1969), lot 559.

Triton V Sale, 16 Jan 2002, lot 2164.
 
Lot sold for $1800, plus buyers fees.

By permission of CNG, www.cngcoins.com.