Watch List notes:

Pny (....), 500 – 480. 1/3 siglos circa 460 BC, AR 3.50 g. Bull standing l. Rev. Head of eagle l; within incuse square. Traité II, 1283, pl. CXXXIII, 22. BMC –. Tziambazis –.
Exceedingly rare. Obverse from a worn die and slightly off-centre,
otherwise about very fine / good very fine

Ex Elsen sale V, 1976, 260