Have always loved the Humpty Dumpty Circus when I've seen it in magazines and toy museums. There was a set for sale at auction, so I got up real close.
The Humpty Dumpty Circus was made by the Schoenhut Company between the years 1903-1935. I think this (above) is a reduced-sized set or assembly.
A website that has a lot of information about the circus is HERE.
A short article about the Schoenhut Company and circus is HERE.
My girls think the clowns are creepy--they are a little. :-)