At least, the one in Dark Knight.

What is it supposed to be? A dollar coin? How much would it be worth today, if it was/is/whatever a real coin?

(Sorry mods, wasn't sure where to put this)

um i think it was a quarter, a double-sided trick quarter.

...uh i think that would be 25 cents.

I think it was sort of just his own like... made-up coin. Didn't it have the same face or whatever on both sides so he would always be right ?

It would be kind of hard to put a price on it, assuming his was the only trick coin ever made.

My thought was that if it was a real coin, and a mis-print/mold/whatever, it'd be worth a lot. :P