Watch List notes:

Probus. AD 276-282. BI Antoninianus (21.5mm, 2.86 g, 11h). Siscia mint, 4th officina. 4th emission, AD 277. Radiate, draped, and cuirassed bust right / SISCIA PROBI AVG, Siscia seated facing, head left, between two river gods (Savus and Colapis), holding diadem in her hands; XXIQ. RIC V 765; Alföldi, Siscia V 69.4; Pink VI/1, p. 51. Dark brown patina with traces of silvering. In NGC encapsulation, 4529310-015, graded AU, Strike: 4/5, Surface: 3/5, silvering. Very rare.

Ex Classical Numismatic Group 112 (11 September 2019), lot 656; Numismatica Ars Classica 100 (29 May 2017), lot 591.