Vintage 1974 'Skylab' US Airmail Stamp Sheet (mint, 10¢, full sheet of 50, Scott #C91) Vintage H.E. Harris 'Stamp Collecting Starter Kit' (1960s, hardcover album, 100 hinges, 50 US stamps, instruction booklet) Lot of 20 Vintage Mint US 'Famous Americans' Commemorative Stamps (Hinged, 1940 Series, Various Denominations) Vintage Scott's National Postage Stamp Album (1930s Edition, Partially Filled with US Commemoratives 1920s-1930s) Lot of 50 Unused US Postage Stamp Booklets (1970s, 10¢ and 13¢ denominations, various cities) Vintage Stamp Collecting Starter Kit (1960s, includes album, hinges, magnifier, tongs, and 100 mixed stamps) Lot of 50 Used US 1930s-1940s Back-of-Book Stamps (Special Delivery, Airmail, Registration, etc.) on Album Pages Vintage Scott Specialized Catalogue of United States Stamps (1948 edition, hardcover, used but intact) Vintage Topical Bird Stamp Collection (Worldwide, 1950s-1970s, 100+ Stamps on Stock Pages) Vintage U.S. Postage Due Stamp Collection (1894-1910, Used, 30-50 Stamps on Album Pages) Lot of 20 Unused 1960s U.S. Christmas Seals in Original Envelopes (variety of designs) Vintage 1970s H.E. Harris 'Hobby of Stamp Collecting' Starter Kit (unopened, includes album, hinges, 50 worldwide stamps) H.E. Harris & Co. 'Stamp Collecting Starter Set' (1970s, 32-Page Album + 100 Mixed Stamps) Lot of 40 Used US Revenue Stamps (Documentary, 1862-1880s, Assorted Issues) Vintage Scott Stamp Watermark Detector Set - Glass Tray, Plastic Tweezers, and Bottle of Watermark Fluid (1960s) Vintage H.E. Harris 'The Wonderful World of Stamps' Beginner's Kit (1960s, includes album, hinges, magnifier, and 100 worldwide stamps) Lot of 4 Vintage Scott Specialized Catalogue of United States Stamps (1978-1982 editions) Vintage Parker Brothers Stamp Collecting Board Game (1966, complete with game board, fake stamps, and album) Vintage Lot of 50+ Unused International Reply Coupons (IRCs, 1970s-1980s) Vintage H.E. Harris 'Stamp Identifier' Booklet (1960s, 24 pages, pocket-sized) Vintage 1980s U.S. State Birds & Flowers Stamp Collection - Mint, in a Whitman cardboard folder (complete set of 50) Vintage 1960s Canadian Definitive Stamp Collection on Pages - Used, including Ottawa and Quebec commemoratives (approx. 200 stamps) Vintage White Ace Stamp Album (US Commemoratives, 1940s-1960s, partially filled with 150-250 stamps) Lot of Vintage Stamp Stock Cards (Scott/Minkus, 1960s-1970s, 20-30 cards with glassine mounts) Vintage Glassine Envelope Assortment (500+ envelopes, unused, various sizes, 1960s-1980s) Lot of Vintage Stamp Show Programs & Exhibition Handbooks (1960s-1970s, 10-15 booklets) Lot of 20 Vintage Worldwide Unused Souvenir Sheets (1960s-1980s, various countries) Lot of 50+ Vintage US Plate Number Coil Stamps (1970s-1980s, various denominations) Vintage Seebeck Invisible Stamp Watermark Detector (fluid tray model, 1950s-1960s) Mint US Bicentennial Commemorative Stamp Series (1976) - Complete Set of 50 Stamps in Original Postal Pack