Watch List notes:

Carausius, antoninianus, London, radiate bust right, rev., adventvs avg, the emperor on horseback arriving in London, small captive on ground below horse's front hoof; in ex., ml, 4.41g (RIC 10; P.J. Casey, Carausius and Allectus: The British Usurpers, pl. 4, 4, this piece), green patina, good very fine and rare (£300-400)