CIRCUS TRUNKS REVISITED,,,,(AMENDED)
If you remember the discussion we had over Circus Trunks a while back, here is an ad from the 1917 Ringling Bros. Magazine & Daily Review, that's the year they did "Cinderella". I'd bet this one would never make the first load-out!!!!
I think you are all referring to the normal "Theatrical" or "Steamer" Trunk, like the one below, which had a flatter top, some were completely flat, & some had just a slight hump. The "Wilt" has a peak like the "gable" on the roof of a house.