Amergins' advice is on the mark. Any veterans organization (VFW, American Legion, Non-Commissioned Officers Association, Fraternal Order of Police, ect)can tell you where you can obtain an appropriate display case. That way you may display the flag in your home, or store it, as you see fit, without damaging it. A flag on a pole is just that, a flag on a pole, but, any veteran and most of the WWII generation will know exactly what that three cornered fold represents. My thanks to your family for your father's service and their sacrifice.

Take care, Timehiker