It is possible, but it depends on which set your coin was in. If your coin is in a standard proof set, it contains no silver. On the other hand, if your coin is in a 3 coin silver proof set with the dollar, half and quarter it is 40% silver. If your coin is loose, you should be able to look at the edge, if it is silver it will usually look more white compared to the non-silver version which will have a stripe of bright red (or sometimes pink) copper.
1976 bicentennial proof set silver dollar half and quarter what's the value of this uncirculated set?
The silver proof 1997-S Kennedy half dollar has an current average value of $15.50.
Some versions of the bicentennial proof half dollar contain 40% silver, while others are the same copper clad as circulating halves. The clad version has a visible copper ring around the edge.
Value for a proof 1962 is $10.00-$12.00
Your coin is almost certainly plated. No silver halves were made in 1972. From 1971 to 1974 the U.S. Mint issued some 40% silver Eisenhower dollars and they issued a 40% silver half dollar in 1976 for the Bicentennial, but not all 1976 half dollars have silver. From 1965 to 1970 half dollars had 40% silver. Some silver proof sets had silver half dollars beginning in 1992.
If you are referring to the special silver proof half dollar it is worth about $40 -$45. All other half dollars from 1995 are not silver and are worth 50 cents. Unless it is in a special holder it's almost certainly not a silver proof.
If the coin is a 1996-S Silver Proof Kennedy Half dollar, average retail value is $12.00 to $15.00
$1.75 for the set.
The US Bicentennial Proof Set came in two versions: the normal set (1 cent thru dollar coin), and the silver 3-Coin Set (quarter, half dollar and dollar). The normal 5-coin Proof Set is worth about $7 retail - and the silver 3-coin set, $25.
It only has silver if it's a '76-S half, in which case it contains 40% silver.
The 1988-S proof Seoul Olympics silver dollar has a current retail value of $15.00
Current retail value is $8.00