Watch List notes:

M. Carbo. 122 BC. AR Denarius (18mm, 3.90 g, 11h). Rome mint. Helmeted head of Roma right; laurel branch to left, X (mark of value) below chin / Jupiter driving galloping quadriga right, hurling [thunderbolt] and holding scepter and reins. Crawford 276/1; Sydenham 423; Papiria 6. VF, toned, old scratches on reverse under tone. Obverse struck with recut die of a quadriga left reverse die. Legs of quadriga left can be seen clearly in field before profile of Roma. Very interesting.

Ex Archer M. Huntington Collection, ANS 1001.1.25479 (Classical Numismatic Group Electronic Auction 328, 11 June 2014), lot 428.