Porcelain Limited Eddition Seymour Mann Doll

I have these 2dolls that were given to me, however the person that game them did not know where they came from or their worth. Their certificates say they are limited edition of only 7500 dolls and a trademark. They were made in china and are in moderate condition. It says on the certificate that the dolls are "historically accurate" and an "important issue in the doll collectors Guild collection chosen by a distinguished panel of the authorities"
I do not know the dolls worth, names, created year or where exactly they came from. If anyone knows anything please help me out, it would mean a bunch. Thank you