Vintage Boeing SST Souvenir Plaque 1970 Supersonic Transport Stamp Block Rare For Sale

Vintage 1970s "Let's Build An American SST" Wooden Souvenir PlaqueUp for sale is a rare piece of Pacific Northwest aviation history from the Boeing 2707 Supersonic Transport program (1969–1971). This ready-to-hang wooden plaque features a complete, uncut 5x5 block of 25 mint promotional campaign stamps. The patriotic graphics remain bright and vibrant under the original protective glaze. Item Specifics:
Front: Uncut sheet of 25 "Let's Build An American SST" stamps over the US flag.
Back: Authentic handwritten vintage provenance reading: "Super Sonic Transport, Boeing Co, 19".
Hardware: Includes original built-in metal hanging bracket.Condition: Excellent vintage condition with a beautiful aged wood patina. No peeling or heavy scuffs. Perfect addition to any collection of Boeing memorabilia, vintage commercial flight items, or local Washington state history.Please see all photos for a detailed look at the front graphics and reverse handwriting. Ships fast and securely packed. Thanks for looking!Fast shipping and smoke-free home.