Card Grading Process
We grade on TRUE a scale of 1-10.
[Sub-Grade Sum] ÷ 40 = Grade
(Centering + Corners + Edges + Surface) / 40 = Grade
I.e., (10+9.5+9.5+9.5) / 40= 9.6
Special tools measure Centering, Corner Straightness, and Images.
Our Expert Authenticator is a member of the American Historical Association & North American Society for Sport History. In addition to being a 20 year collector of various memorabilia and collectibles.
OGS™ utilizes various outside expertise, history, and media materials to authenticate submissions. In this way, we can insure the most in-depth knowledge of any particular submission.