Watch List notes:

M. Aemilius Scaurus and Pub. Plautius Hypsaeus. 58 BC. AR Denarius (16.5mm, 3.72 g, 1h). Rome mint. Nabatean king Aretas kneeling to right, holding reins and olive branch before camel standing right / Jupiter driving quadriga left, holding reins and hurling thunderbolt; scorpion below horses. Crawford 422/1b; Sydenham 913; Aemilia 8; RBW 1519. Light iridescent toning, lustrous, minor obverse die rust. EF.

From the Jack A. Frazer Collection. Ex Classical Numismatic Group 39 (18 September 1996), lot 1219.