I acquired this cover from an old dealer stock.  It was originally priced at $20.00 in the late 1990's.  This is a flight cover featuring the 5-cent airmail, Scott #C11.  The cover is commemorating the First National Glider Carnival at Ford Air Port, Nov. 23,1929, and Detroit Municipal Air Port, Nov. 24, 1929.  It is addressed to Davenport, Iowa.  We are offering this unusual cover at 25% off the original dealer's price.