This anonymous Etruscan series (based on an as of c. 177g) seems to demonstrate a continuity of symbolism between 3rd century inland Etruria and 1st century Rome regarding symbols of the priesthood. HN Italy 68a-e, Haeberlin pp 273-5, Vicari 219-23.
[Why can’t I find a digitized copy of Haeberlin’s Aes Grave? He died in 1925. Even allowing the full 80 years post the author’s death (German pre 1965 law), this would still have put it out of copyright more than a decade ago!]