The 1964 Bailiwick of Jersey Proof Set contains 4 coins, two each of the 1/12th Shilling which is bronze and, two each of the 1/4 Shilling (Threepence) which is nickel/brass.
A Bailiwick of Guernsey 1966 Proof FDC four coin set (QE II), in absolute mint condition and original packaging, could fetch up to £15 GBP. The values quoted are the best possible for the best specimens in their grades, but may be significantly lower due to varying demand for the coin and the prevailing economic climate. A reputable coin dealer will be able to give a more accurate valuation based on inspection of the coin.
A Bailiwick of Jersey 1966 cupro-nickel One Fourth of a Shilling (Elizabeth II), uncirculated and in absolute mint condition could fetch up to £10 GBP. If it has been circulated but still in good condition, it might fetch anything up to £5 GBP. A Bailiwick of Jersey 1966 cupro-nickel One Fourth of a Shilling (Elizabeth II)(Proof FDC), uncirculated and in absolute mint condition could fetch up to £15 GBP. A reputable coin dealer will be able to give a more accurate valuation.
This variety is found only on Proof coins, values are $10.00-$40.00
Current average retail value is $19.00
All US Proof sets of 1964 and before have silver coins in them, the current value of a 1959 set is $28.00.
A complete 5 coin 1964 proof set in original mint packaging has a current value of $30.00. The issue price was $2.10.
All US Proof sets of 1964 and before have silver coins in them, the current value of a 1958 set is $43.00 issue price was $2.10
There isn't anything on a coin called a "proof mark". There are MINT marks, small letters that indicate which mint struck the coin. Proof coins are specially-struck and sold in packages to collectors and investors. Up to 1964, most proof coins were made at Philadelphia and didn't carry mint marks. Since 1968, proof coins (with a couple of exceptions) have been made in San Francisco so they carry an S mint mark.
If you are referring to the the modern (1992-2011) "Silver Proof" sets, yes the coins are 90% silver.
A cent specially minted using a highly polished die that gives the coin a mirror finish. Since 1968 most proof coins have been struck at San Francisco. Up to 1964 most were made in Philadelphia.
1964 was the last year for 90% silver coins and 1970 was the last for 40% silver coins. Special Bicentennial (1776-1976) collectors coins were made in 40% silver. From 1992 to date proof collectors coins have been struck in 90% silver.
Proof SBA dollars are normally in sold in special packages identifying them as proofs. Proof coins are also double struck and polished to be solely for collectors ... they are therefore a superior coin. Your coin if still in a protective package will have a mirror finish and be highly detailed; more so than those made for circulation.Normally it's possible to identify recent proof coins by their mint mark but that's not the case with SBA dollars. The same mints that struck proof coins also made dollars for circulation, which is not normal Mint practice.Proof SBA dollars were minted at San Francisco in 1979, 1980, and 1981. Proof coins from those dates carry an S mint mark.If it's dated 1999, the Philadelphia Mint (P) struck SBA proofs that year, the only date and denomination of proof coins struck at Philadelphia since 1964.