USA Scott 617-619 Lexington Concord First Day Cover - Complete set, Boston MA cancels, typed address. Light stain at left. (Est $75-100) (Image)

USA Scott 645 First Day Cover - Valley Forge - 1st Egolf Cachet - First Egolf cachet in red, tied by Valley Forge PA cancel. Planty #22. F-VF. (Est $50-100) (Image)

USA Scott 649-650 Aeronautics Issue 1928 - 4 Different First Day Covers - 4 different first days, all addressed, includes Griffin and Roessler cachets. Also included is an beautiful B.B. Lipsner cachet signed along with a large card with Scott 650 flying solo. Mostly F-VF. (Est $100-150) (Image)

USA Scott 657 Sullivan Expedition First Day Covers - Complete set ofl 15 different cities - Egolf Cachets. Stamped addresses. F-VF. (Est $200-300) (Image)

USA Scott 790-794 Navy Issue First Day Covers, Historic Arts/Walker CachetsGroup of 5 covers, all with blocks of 4, addressed, some minor toning. (Est $20-30) (Image)

USA Scott 833 First Day Cover - Cachet Craft $2 Harding - Registered, addressed, F condition with some light soiling. (Est $30-40) (Image)

USA Scott 834 First Day Cover - Washington Stamp Exchange Cachet $5 Coolidge - Addressed in pencil, F-VF. (Est $75-100) (Image)

USA Scott 943 Smithsonian Hand Painted First Day Cover - 1946 first day cover, unknown cachet, some slight soiling. F-VF. (Est $20-30) (Image)

USA Scott 2709 Tiger, Diane Bruckman Hand Painted First Day Cover - Gorgeous with the finest detail. A well-done hand painted first day cover. (Est $30-40) (Image)

USA Scott C13 VF First Day Cover - April 19, 1930 Washington D.C. CDS. New York (Varick St. Station) backstamp. Non-Zeppelin Flight related First Day Cover. (Est $500-700) (Image)