According to the Standard Catalog of World Coins, the US Mint produced 11,426 proof sets in 1940 and sold them for $1.89 each. According to the same source, a 1940 proof set is currently valued at US$1,475.00. If you have one, however, I would suggest going to a reputable coin dealer for a better valuation based on the condition of your particular set.
Depends on what kind of a set it is. Official mint set, mint proof set, or just 5 coins someone put in a holder? An unopened (still in sealed official U.S. mint packing envelope) US mint silver proof set sold for $29.98 on Ebay on 10/14/2009.
You probably have an annual proof set since an uncirculated annual set was not minted that specific year. Nevertheless, a 1950 annual proof set is worth: $650 - $900.
Those are very common -- worth less than a dollar.
NO US proof sets were made in 1965-1967 but they did make Special Mint Sets the coins in these sets do have some proof like details. Current retail value for a 1965 set is $8.00 issue price was $4.00
With original Mint packaging retail is $30.00 for a Silver Proof Set
According to the Standard Catalog of World Coins, the US Mint produced 11,426 proof sets in 1940 and sold them for $1.89 each. According to the same source, a 1940 proof set is currently valued at US$1,475.00. If you have one, however, I would suggest going to a reputable coin dealer for a better valuation based on the condition of your particular set.
The U.S. Mint does not make "proof mint sets" of any year. The two types of sets have very different coins in them. A 1980 PROOF set has a current value of $5.00 and was issued for $10.00. A MINT set has a value of $8.00 and was issued for $9.00.
July 9, 2009 The Uncirculated US Mint set is valued at about $15. The 2005 US Mint Proof set is valued at about $25. The 2005 US Mint Proof set is valued at about $42.
July 9, 2009 The Uncirculated US Mint set is valued at about $15. The 2005 US Mint Proof set is valued at about $25. The 2005 US Mint Proof set is valued at about $42.
The 5 coin proof set has a value of $6, the 10 coin set has a value of $15 and the 10 coin silver set has a value of $48.
Current value of the 2003 10 piece Proof set is $10.00. Issue price was $19.95.
The 2006s 10 coin proof set has a retail value of $31.00 issue price was $16.95
A normal 1991 S proof set is worth $9. A 1991 S proof prestige set is worth $51.
There is no record of the Royal Mint having produced a "gold" Proof set in 1974, only the usual Proof set. Royal Mint gold Proof sets issued from 1980 contain only the "Sovereign" coinage.
In original box as issued from the Mint retail value is $84.00, issue price was 19.95
Proof sets were not made in 1965, but a 1965 special mint set is worth $12.00 USD.