Quote:
I contacted the philatelic foundation because I have some used special printings and they said I would need to get an expert to look at them and then send in for a certificate.
Excellent suggestion from the philatelic foundation. Essentially, don't waste your money on a certificate until you have someone else look at them. Look through the helpful sites mentioned, then go to a local stamp club or show, if necessary. They can give you a quick look over. Good luck.