Watch List notes:

WORLD COINS, New Zealand, Elizabeth II, Cupro-nickel Pattern 50-Cents, 1986, struck at the Royal Mint, crowned bust right, rev HMS Endeavour, 13.54g (KM 63 for type, pattern unlisted), together with a currency piece for comparison. The Pattern with some light marks, otherwise mint state and very rare. (2)
The Pattern differs from the currency coin, having no rigging to topsails and with water ripples below ENDEAVOUR.

Estimate: £1500-2000