Watch List notes:

Further Coins From the Cabinet of Robert P. Ball | Phokis, Phocian League AR Triobol, head of bull facing, rev. head of Artemis right within incuse square, [F-O]-KI surrounds, 1h, 2.92g, (BCD Lokris-Phokis, 189) some flattening on reverse, obverse nicely struck in high relief, lustrous and good fine.
Purchased by Private Treaty from Bank Leu, 1970, CHF140.
Estimate: £30 - £40