Watch List notes:

Postumus. Romano-Gallic Emperor, AD 260-269. Antoninianus (22mm, 3.23 g, 1h). Mint I. Group IVa (AD 266). IMP C POSTVMVS P F AVG, radiate, draped, and cuirassed bust right / DIANAE REDVCI, Diana walking right, holding bow and leading stag. AGK 13 (r2); RIC V 300; Cunetio 2429. VF, silver content, some porosity, flan a little ragged. Very rare.

Ex Heidelberger Mūnzhandlung 23 (12 November 1998), lot 230.

This type of Diana Redvx only appears on the silver coinage of Postumus. With over 33,000 antoninianii of Postumus having been recorded from hoards over the years only 4 pieces with this reverse have been noted