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Certified Guaranty Company
P.O. Box 4738
Sarasota, FL 34230
1-877-662-6642 toll free
941-360-3991
941-360-2558 fax

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CGC authenticates and grades comics CGC offers magazine grading for Sports Illustrated and Playboy magazines CGC’s Signature Series designation means signed comics, magazines and photographs have been witnessed and authenticated.