Not the 1973 stamps which are worth more then face value.Thanks for the information and feedback. I'll used them to pay some bills. Thx!
LOL, I'm a part time stamp dealer... There is no demand, they are not rare and I do not purchase them, rather I end up with them when buying collections and have to figure out a way to unload them. Face value of the 1973 souvenir mint set is $2.64. On a good day you might sell them on eBay for $4.95 with free shipping. On a bad day you won't be able to unload them for .99 cents.Not the 1973 stamps which are worth more then face value.
Unless I am mistaken, stamps are considered legal tender. You can use them as cash to pay off that parking ticket or HMO fee!