Steeplechase Park, Coney Island
For an image that's strikingly similar to Conrad Veidt's in this film (and seemingly earlier), go to:
http://www.westland.net/coneyisland/articles/steeplechase1.htm
and scroll down to the picture captioned, "Steeplechase Park's trademark logo".
Although I only had 2 or 3 opportunities to go to Steeplechase Park when I was a kid (only on vacations to NYC), I was always spooked and enthralled by that "fun" but creepy face.
According to http://www.coneyisland.com/museum.shtml, the image dates to the 1890's. (Not that a grinning face itself is so original, but, at least to me, the similarity here is pretty stunning.)
Veidt's eyes and entire face are SO moving in this film! Please, no remake!