Where ever you want to. But a coin fair may be best if you want a good price or use eBay and set the reserve to what the set is worth.
Try calling any coin dealer in your area, most do buy Proof sets.
1936 is the year the mint started producing proof sets annually for public sale
1990
The US Mint did not produce any proof sets in 1943.
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.
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
Yes, you can buy current silver proof sets & bullion coins from the U.S. Mint.
Yes. Proof sets contain official US coinage that can be used as legal tender, although to a collector proof sets are worth more in the mint holders in which they are issued. Proof coins are not intended to be spent, but are legal US tender.
No silver Proof sets were issued in the years given in this question. Proof Prestige sets were issued in 1986-1990 that have current retail values of $36.00. The standard proof sets are $6.00 each.
The US mint did not produce proof sets in 65,66,67 it'sreferred to as a Special Mint Set and the coins are not proof,but have proof like brilliance.The values are $9.00 for the 1966 set, issue price was $4.00
No US proof sets were produced in 65, 66 or 67. Special Mint Sets were issued with coins that have proof like qualities. Issue price was $4.00 current value is $11.00.
The 10-piece 2003 proof sets have a current market value of $10.00. Issue price was $19.95.
It wouldn't be a proof set if it was struck at the Denver mint (all proof sets 1968-present have been struck at the San Fransico Mint) and so it would instead be a partial mint set. I'd say it would be worth about $3-4 if it was sealed.