Green’s Dictionary of Slang

(Aus./N.Z.) anything or anyone considered excellent or attractive.

1941		Baker Popular Dict. Aus. Sl.
1988		(ref. to 1930s) McGill Dict. of Kiwi Sl. 106/1: snozzler any truly excellent person or thing; possibly a blend of ‘snifter’, a fine person or thing, and ‘bobbydazzler’; c.1935.
2003		McGill Reed Dict. of N.Z. Sl. [as cit. 1988].