The SP/PA mark below the effigy stands for "Silver Plating/Placage Argent". Your Titanic collector's set includes a grained leather-bound collector's album telling the story of the tragedy from a Canadian perspective. The set includes an authentic White Star Line share certificate (issued circa early 1900s) and protective cover, all five stamps from the Canada Post Titanic centennial set, two mint-supplied Titanic collectible coins, a special reproduction of the Titanic postmark and three Titanic postcards. - A sheet of Titanic stamps bearing two unique cancels is offered exclusively in this Titanic collector's set! - You'll also receive an authentic White Star Line share certificate issued around the early 1900s, in a protective pouch. - Your genuine share certificate was issued by the International Mercantile Marine Company, the shipping trust that controlled the White Star Line, builder of the R.M.S. Titanic. - Each share certificate has a unique number and a different value, and many were issued to "rich and famous" investors in the early 20th century. - The set also includes the five stamps in the series issued to mark the centenary of the sinking of the Titanic. - A special reproduction of the postmark used aboard the Titanic. - Three Titanic postcards. - Also includes a numbered certificate of authenticity. Only 10,000 sets will be issued. Packaging: - Your Titanic Collector's Set comes in a beautiful grained leather-bound collector's album. The Titanic Collector's Set is a unique collection of stamps, coins and more.