Yes. All New Zealand "silver" coins minted from 1933 to 1946 inclusive had a 50% silver content.
From 1947 onwards, they were all made from a copper-nickel alloy.
The last New Zealand Shilling containing any silver at all, was minted in 1946. From 1947 onwards, all New Zealand Shillings were made from a copper-nickel alloy. The last New Zealand Shilling was minted in 1965. The 10 cent coins that replaced them had ONE SHILLING marked on them in 1967, 1968 and 1969.
No. No New Zealand general circulation coin has contained silver or any other precious metal from 1947 to present day. Prior to 1947, New Zealand "silver" coins had a 50% silver content.
The last New Zealand Shilling was minted in 1965.
All New Zealand silver coins from 1933 to 1946 inclusive were made from 50% silver, 40% copper, 5% nickel and 5% zinc.
New Zealand has never issued a 20 Shilling coin.
New Zealand has never produced a 50 Shilling coin/note.
The Maori warrior on the reverse of the New Zealand Shilling does not represent a particular individual. All New Zealand coins have a uniquely New Zealand image, or something relevant to New Zealand history on the reverse. The reverse of the New Zealand One Shilling coin shows a crouching Maori warrior carrying a taiaha.
There were no 1936 New Zealand Shillings minted.
The value of NZ coins varies widely, and you will find a book listing these at most coin and stamp dealers.
Zero. No New Zealand general circulation coin has had any silver content since 1946. The only exception to this is the 1949 and 1953 Crown (Five Shilling) coins. From 1947 to 2006, all New Zealand general circulation "silver" coins were made from a copper-nickel alloy. From 2006 onwards, all New Zealand general circulation "silver" coins were made from nickel plated steel.
Royal New Zealand Navy was created in 1941.
A New Zealand 1940 50% silver Shilling (George VI), uncirculated and in absolute mint condition could fetch up to $175 NZD. If it has been circulated but still in good condition, it might fetch anything from $6 to $80 NZD. There were 500,000 minted. A reputable coin dealer will be able to give a more accurate valuation.