Thank you for your quote PG. I know when I lived in Seattle I didn't come across that many Philadelphia mint coins either. It seems the Philadelphia mint had a lot of problems with this homestead coin dies.
Wexler update . The 2015-P Nebraska Homestead quarter is 2015-P 25¢ NE WDDR-075B which is a new stage listing for my files. This is a case where the massive die breaks add more value to the coin than the doubled die.