The 2008 Oklahoma Official First Day Coin Cover is the 46^th in the series.  This limited-edition cover – only 35,000 will be produced – features two Oklahoma quarters from the first day of mintage – December 17, 2007.  Each cover includes two quarters, one each from the United States Mints at Philadelphia and Denver, on a handsome display card with the U.S. 41-cent American Flag postage stamp.  The postmark of January 28, 2008, Oklahoma City, Oklahoma marks the day the Oklahoma quarters were first released to the Federal Reserve Bank and to the public.