I have a Superman Coloring book from the 80's. How much do you think its worth?

I have my dad's old superman coloring book. He had it from the 80's. No coloring in it. mend condition. Is it worth anything?|||Compare it with similar ones at http://www.ebay.com|||Whatever the buyer is willing to pay|||The same amount from when he got it..........|||Check Ebay... proably not a whole lot. You could give it to a kid who likes Superman, that would be vey nice.