1955-6 New Zealand 0/K Wilson One Pound

Reserve Bank of New Zealand. Chief Cashier Wilson. 0/K 065893 One Pound. P#159b. 

This prefix was accidentally issued by the RBNZ, the intended prefix should have been K/0 ( letter over number ) instead of 0/K ( number over letter ), thus creating a super rarity amongst all other New Zealand banknotes. Only around 11 other examples are known to exist. A single pinhole in the upper margin, above the bust of Captain Cook. F-gF. 

Ex Aventine Numismatics, c. Spring 2023, found with a hoard of several other One Pound and Ten Shilling notes accumulated c.1955.