{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"The stamp collector's guidebook of worldwide watermarks and perforations [Numbering system guide -- Watermark detecting -- Papermakers' watermarks -- Philatelic eatermark types -- Sudan watermark incident -- Confederate States watermark -- Watermarks in g","author_name":"Ervin J. [cover design, Mel Haag; with A L Michael, R Arnstein, J Minkus, John Mathews, Lyons Livingston, Sylvester Colby, Neil Shafer, John Gartner] Felix","thumbnail_url":"https://www.ebooknetworking.net/books/noimage.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B00EUUBCY4.html\">The stamp collector&#039;s guidebook of worldwide watermarks and perforations [Numbering system guide -- Watermark detecting -- Papermakers&#039; watermarks -- Philatelic eatermark types -- Sudan watermark incident -- Confederate States watermark -- Watermarks in g</a>","width":400,"height":300}