The top 3 are Scott's # 523, 80pf Indigo and my 1996 catalog lists them at .20 cents apiece - if undamaged, but the top two appear damaged. The lower green 5pf is Scott's #509, and it lists in my 1996 catalog at .15 cents, but the one you have is damaged. These are what dealers refer to as kiloware, and the stamps they pour into a box and sell for pennies apiece, as they are not worth the time to sort and catalog them. Damaged stamps with minimal value are considered worthless. I hate to bust your bubble, but don't quit your job yet! I work for a stamp dealer, helping to sort the stuff he gets, and have collected for about 45 years. Stamps are fun, but most are not worth much in the way of money, sorry.
