Watch List notes:

Crispus. Caesar, AD 316-326. Æ Follis (19mm, 3.31 g, 6h). Londinium (London) mint. Struck AD 317. Laureate, draped, and cuirassed bust right / Sol standing left, chlamys across left shoulder, right hand raised and holding globe in left; S/*|P//PLN. RIC VII –; C&T 8.10.003 (this coin cited and illustrated). Partial silvering toned gray and brown. Good VF. Extremely rare.

From the Paul DiMarzio Collection. Ex Classical Numismatic Group Electronic Auction 226 (27 January 2010), lot 564 (hammer $410).

From Lee Toone: "The only known example of this type/mintmark for Crispus."