Watch List notes:

Probus. A.D. 276-282. Æ antoninianus (23 mm, 3.91 g, 5 h). Equiti series. Ticinum. IMP C M AVR PROBVS AVG, Radiate and mantled bust of Probus left, holding eagle-tipped scepter. / MARTI PACIF, Mars advancing left, holding olive branch, spear, and shield; I-// QXXI. RIC 508; RSC 352. Dark brown patina, minor porosity. Good very fine. 

From the Maple Leaf Collection.