There are LOTS of circus models, but I think only one is being auctioned this month in Canada. Maynard's in Vancouver is selling the Ringling Brothers and Barnum & Bailey circus made by Bert and Bill Backstein on May 20. As you can see, the Backstein boys even made tiny sideshow banners. The first two photos show but a "small" amount of the material being sold.
Other circus replicas abound. Just a few more are shown here, but there are hundreds of miniature circus carvings, probably one in each town... John Zweifel's staggering miniature with hoards of Lilliputians crowding towards the entrance...and the Lou Ann Circus complete with operating electric generators, room for 10,000 tiny people and enough entertainment for them all, finally the tobacco scented creation of Ed Hollis. Every boy wanted to run away and join the circus at one time or another...some had to be content with making one downstairs.
Assorted Post Card Miniature circus models, c. 1950. Collection Jim Linderman