Happy Groundhog's Day all......Another year and no confirmed Key......
But I did have fun looking for one in Punxsutawney this past Sunday....I share the full story here:
Having Fun Searching for the Key of The Whistle Pig Treasure Hunt » Mysterious Writings
Long story short....I didn't find it, but am still looking.
I feel the key may only be an image and it is in a special location to be 'valued'.
Best of luck with all that you seek! ~jenny