Stamp Chats: Solving the Mystery of Specimen Stamp Irregular Blocks

Gary Loew joins the American Philatelic Society‘s Stamp Chat series to discuss “UPU Specimen Stamps and the Irregular Block Mystery”. He will explain what a UPU specimen stamp is and delve deep into this philatelic subject. Fans of Gary Loew will enjoy his style; always adding good humor to each and every one of his talks.