Watch List notes:

Constantine I. AD 307/310-337. Æ Follis (22mm, 4.42 g, 6h). PRINCIPI Two Standards Type. Londinium (London) mint. Struck circa AD 311-312. Laureate and cuirassed bust left, holding eagle-tipped scepter in right hand / Constantine I standing left, holding signum in each hand; –|*//PLN. RIC VI 221; C&T Supp. 7.06.015 (this coin cited and illustrated). Brown patina, roughness. VF. Extremely rare.

From the Paul DiMarzio Collection. Ex Marvin Lessen Collection (Part 1, Dix Noonon Webb 146, 25 April 2018), lot 153; Sotheby's (28 February 1979), lot 173; 1970 Bourton-on-the-Water Hoard.