Friend of mine just had a "barn find" of this double sided porcelain sign. I told him I would try to give him some idea of value. Porcelain is in good condition, there is at least one small rust spot. And it looks like whoever owned it previously made a metal light holder for it. I assume that is not original. Can someone help with idea of value? I found one that sold by Barrett-Jackson back in 2011 for $6000. Looked to be in excellent condition.

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