You can use them for 8 cents worth of postage.
Depending upon the type of stamp (booklet, coil, sheet) you can purchase them for 40 to 50 cents each. Most dealers aren't going to buy one or two stamps. With some quantity they may make an offer, usually at about 25% of the purchase price. So you might be able to get a dime for them.
That would be Scott Number US 1395. An unexploded booklet has a catalog value of $25.
One dollar.
One dollar.
The 1972-S Proof Eisenhower Dollar has a current retail value of $6.50
They're still worth a dollar.
One dollar.
Face value only.
Check that coin again. Eisenhower was on a large dollar, and Kennedy is on the half dollar. Either way, a circulated specimen is worth face value.
About $3.25.
It's still only worth 1 dollar.
One dollar.
Current value of a 1990 Eisenhower Centennial dollar is $23.00-$25.00.