German WWII Grain Sack unissued

German WWII Issue grain sack or Flour sack.  Large canvas bag in an off-White color, this bag has not been used, but shows storage stains.  Has the light blue stripes and on the front the Whermacht eagle in Black and on the back the makers name "H. Vpfl."  and the date 1940.  Measures 40X26 inches.  This ones unissued and in nice shape, early date.