I found a 1955 wheat back that is for certain a double die and yes I realize their was roughly 20k of them made however mine has another error it's off center does this make mine one of a kind ? Their for making it more valuable?

I would definitely say it is worth more, nice coin!

I would definitely say it is worth more, nice coin!

WOW thats a stunning error!  Definitely worth way more in the right market.  If you are a member of CONECA, I would recommend sharing this coin with the error/variety world in the Errorscope.