Circular Aes Rude. ; Circular Aes Rude; Italy, 8th-3rd BC, Haeberlin pl. 2.1. Circular aes rude, 15 cm, 1.60 kg, c. 5 Roman pounds. Cast copper disk, mounded obverse, thickening toward center, flat reverse, rough surfaces.Somewhat irregular shape. Earthen surface with green patination beneath.