How much is the first photograph of man on the moon worth?

I have a copy of a photo. Says, "Supplement to The Philadelphia Inquirer, July 23, 1969". Its a CBS News Photo. It is the first photograph of man on the moon published in color which shows Neil A. Armstrong, right, and Edwin E. Aldrin, JR., placing the American Flag on the surface of the moon on Sunday, July 20, 1969