Watch List notes:

Greece, Ionian Islands, William IV (1830-37), silver proof 30-Lepta, 1834, Britannia seated right, rev. value in wreath, no stop after date (KM 35; Pr.10), lightly toned, extremely fine and very rare.
:
Spink coin auction 5, Thursday 17 May 1979, lot 308
Estimate: £400.00 - £600.00