Have you had those cards professionally graded? If they are truely "Gem mint" then their value increases quite a bit, but they have to be professionally graded to know for sure exactly what grade they get.
Either way, The Beckett Baseball Almanac should have most of those cards and thier values listed in it. I don't have a recent issue or I'd be happy to tell you what they list for. Should be able to pick up a copy of the book at most bookstores though.
Yes doctor, I am sick.
Sick of those who are spineless.
Sick of those who feel self-entitled.
Sick of those who are hypocrites.
Yes doctor, an army is forming.
Yes doctor, there will be a war.
Yes doctor, there will be blood.....