Scott 2007 mint 20c - Knoxville World's Fair - Synthetic Fuels, 1982 Commemorative Stamps, representative stamp imaged.
Scott 2007 mint 20c - Knoxville World's Fair - Synthetic Fuels, 1982 Commemorative Stamps, representative stamp imaged.
Scott 2007 mint 20c - Knoxville World's Fair - Synthetic Fuels, 1982 Commemorative Stamps, representative stamp imaged.