There were only 200,020 New Zealand 1949 Crowns minted and most of the surviving coins are in the hands of collectors. There is no indication that any substantial numbers of them have turned up in Afghanistan.
The 1935 and 1949 New Zealand Crown (Five Shillings) coins were struck in 50% (fine) silver with the remainder made up of copper and nickel. The 1953 New Zealand Crown (Five Shillings) coins were struck in 75% copper and 25% nickel.
Zero. No general circulation New Zealand decimal coin has any silver content, or any other precious metal. Prior to 1947, New Zealand predecimal silver coins had a 50% silver content. All "silver" coins minted from 1947 onwards were made from a copper-nickel alloy. The only exception to this was the 1949 Crown (Five Shillings) which was minted from 50% silver.
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.
There are 4 Isle of Man 1976 Commemorative Crown coins. Two are silver, two are copper-nickel. The silver coins coins are 0.9250 silver, as close as you are likely to get to pure silver.
The 1949 New Zealand Crown (Five Shillings) was made from 50% silver and weighed 28.28 grams.
The denominations of silver coins in circulation in Australia are threepence, sixpence, shilling, florin, crown, round and the State Series. There are varying degrees of silver in each of these denominations with the crown having the highest percentage of silver.
Such a coin does not exist. The Royal Mint produced no 1704 Crown coins.
Dating back to the settlement of New Zealand and prior to New Zealand issuing its own currency in 1933, the usual range of British coins and some Australian coins were circulating as legitimate currency in New Zealand. Pre-1933 British coins would have included the gold Sovereign and Half-Sovereign, the silver Crown, Halfcrown, Florin (Two Shillings), Shilling, Sixpence and Threepence, the bronze Penny, Halfpenny and Farthing. The Australian currency of the time was almost identical to the equivalent British coins and included the silver Florin (Two Shillings), Shilling, Sixpence and Threepence, the bronze Penny and Halfpenny.
The Royal Mint did not produce any Crown (Five Shilling) coins from 1903 to 1926 inclusive, Proof, pattern or otherwise. It is quite unusual that no 1911 Crown was produced since it was the Coronation year of George V. All British "silver" coins minted prior to 1920 contained 92.5% silver. There was a silver Proof FDC Halfcrown coin minted in 1911.
All British sterling silver Crown coins from 1887 to 1902 inclusive are 38mm in diameter and weigh 28.35 grams.
Three. 1935 - "Waitangi" Crown - 1,128 minted. 1949 - "Royal Visit" Crown (which never happened) - 200,020 minted. 1953 - "Queen Elizabeth II Coronation" Crown - 257,000 minted.
The silver content of the 1981 British Royal Wedding commemorative general circulation crown is zero. It is a cupro-nickel coin. No British general circulation coin has had any silver content since 1946. The 1981 silver Proof FDC Crown coin which was sold in a case, has a 92.5% silver content.