This is one of the most interesting Courvoisier items -- a set-up that simulated the layers in a multiplane camera.
The picture includes a glass foreground, a cel, another glass layer with several stars and a final painted background. Very nice. The item is a little small and you have to get close to actually see the multiplane effect.
Courvoisier Multiplane Simulation
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From “Wynken, Blynken And Nod” (1938). Simulated Multiplane layout. Cel and painted background produced by Courvoisier Galleries from “Wynken, Blynken and Nod” (1938). [Image: 6-1/8"W x 5-3/4"H. Frame: 8-3/4"W x 8.25"H] SeqID-0279 8/3/2005