Watch List notes:

Constantine I. AD 307/310-337. Æ Follis (22mm, 4.49 g, 6h). Londinium (London) mint. Struck circa AD 311-312. Laureate, helmeted, and cuirassed bust left, holding spear forward in right hand and shield on left arm / Concordia standing left, holding signum in each hand; –|*//PLN. RIC VI –; C&T 7.04.039 (this coin cited and illustrated). Brown patina, thin die break on obverse, some roughness on reverse. Near EF. The sole example cited in LMCC. Very rare.

From the Paul DiMarzio Collection, purchased from Zach Beasley (Beast Coins), 12 June 2009.