I read your story a while ago, and just stumbled upon it again. This time around i realized that the coin used was the double sided one.
Thinking about it i would love to read a story, maybe set during bad day at black rock, where in john storage garage sam found the coin john kept and broke down.
Dean getting the full story would make for an awesome addition to this story.

:) just something for you to ponder, i reallllly dont want this story to be finished.