Gum that is in immaculate condition. 2007 PSE certificate #1138856 (graded 100, nh) - encapsulated.Rupp Brothers was established in 1975 - our 48th year in business as professional philatelists. Contact Christopher Rupp to sell your graded United States stamps. Well-centered never hinged and lightly hinged stamps, especially those graded 90, 95 and 98, are required for Rupp Brothers' discriminating customers. Professional Stamp Experts and Philatelic Foundation certificates are preferred. Christopher can be counted on to provide collectors with trusted and competent advice. You will receive candid answers to your questions and a strong market-price offer for your high-quality stamps.