Michael Rosenberg is a lifelong collector of US revenue stamps with a specialty interest in Match and Medicine. He is a 40 year life member of the American Philatelic Society, and a 40 year member of the American Revenue Association and the NY local chapter. After working for two auction houses and several dealers he joined the Philatelic Foundation in 2002. His work at the Foundation includes opening and entering the incoming submissions into the system and linking each patient to an eventual certificate number. He assists with the scanning and is the first screener as the patients get described prior to review. He prepares the worksheets and at the end of the expertizing process he maintains the patient records. He also assists with the expertizing of revenue submissions.