Anonymous Aes Circa 6th-4th centuries BC. Æ Aes Rude / Formatum (43mm, 22.05 g).
Uncertain central Italian mint, Etruria or Umbria.
Rare auditory canal shaped, seems to be made melting wax inside the ear of someone to have the internal ear canal mold and then cast to bronze
Similar to Vecchi, Plate 1, 13, 1998, 555 types (but not found in this shape)
Dark green earthen patina.
Rare and interesting.