Watch List notes:

P. Aelius Paetus. AR Denarius, 138 BC. Obv. Helmeted head of Roma right; behind, X. Rev. The Dioscuri galloping right; below, P. PAETVS; in exergue, ROMA. Cr. 233/1. AR. 3.74 g. 19.00 mm. From masterly engraved dies. Superb iridescent tone, with blue and reddish hues. Minor areas of striking flatness, otherwise EF.