Watch List notes:

C. Mamilius Limetanus. AR Denarius serratus, 82 BC. Obv. Bust of Mercury right, wearing winged petasos and holding caduceus. Rev. Ulysses standing right, holding staff and extending right hand to his dog, Argos. Cr. 362/1. AR. 3.68 g. 22.00 mm. Toned. Metal flaw on obverse. About EF/VF. ���

The gash across the obverse surface is an 'adjustment al marco'. (C. Stannard 'The adjustment al marco of the weight of Roman Republican denarii blanks by gouging' in 'Metallurgy in numismatics vol 3' Royal Numismatic Society, 1993).