Want this question answered?
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.
It depends on your preference. A silver proof set contains coins made of 90% silver, while a regular proof set does not. Silver proof sets tend to have a higher intrinsic value due to the silver content, but they may also come at a higher cost compared to regular proof sets.
No 1972 silver proof sets were made, only single Eisenhower uncirculated & proof coins were struck in 40% silver.
No silver coins were included in the 1973 Proof sets.
1964 proof Kennedy halves are 90% silver, 68, 69, 70 proofs are 40%. The 3-piece Bicentennial silver proof & silver mint sets are 40% and 1992 to date silver sets are 90%.
A 1985 proof contains no silver coins.
The 40% proof silver set was a 3 piece.
The U.S. Mint did not issue a 1979 Silver Proof set. None of the coins contain any silver.
No US quarters dated 1966 are silver. The only US quarters struck in silver are dated 1964 or before with the exception of silver proof sets (most proof sets are -not- silver and silver proof sets are marked as silver) but those are dated from 1992-present.
Most New Zealand silver Proof coins are sterling silver containing 92.5% silver.
A 40% silver "S" mintmark proof Eisenhower contains .3161oz of pure silver or 8.96128 grams
So far 2009 was the only year no Proof Silver Eagles were issued.