Watch List notes:

COINS, CHANNEL ISLANDS, JERSEY Jersey(?), Elizabeth II, Bronze Trials (3), for a decimal currency issue, undated (c.1960), 1-Cent (17mm), 1-Cent (20mm) and 2-Cents (20mm), all on 1.5mm thick flan, obv QUEEN ELIZABETH THE SECOND, crowned head right, rev denomination. Few hairlines, otherwise uncirculated and extremely rare. (3)
with a Spink ticket that states "Channel Islands Trial Pieces c.1960 £1500"

Estimate: £500-800