All About Pocket Knives

Could someone tell me if my Adrian Harris Coon with the big blade missing is worth anything ?

I'm not sure how much someone would be willing to pay for that particular knife in that particular condition, but yes, it is worth something. It's hard to see a lot of detail in the picture but it looks like the handles and remaining blade are in good shape. Someone who needed any of the parts for repairing a similar knife would no doubt be willing to spend a few bucks for your knife.