Paper Fold Out Anatomical Models, Male and Female Pair, 1930-40ss glazed pottery bowl Box measures 2 3/4" x

Box measures 2 3/4" x 3 7/8" x 1/2"

Update: I've learned this pig is a "ramp walker

I'm not completely sure what this would have been made for

There is a little darkening to the the surface due to age

Paper Fold Out Anatomical Models, Male and Female Pair, 1930-40ss glazed pottery bowl Box measures 2 3/4" xI've seen a few of these online but had never come across a pair out in the world until finding these the other day, and aside from a couple tiny losses to her left shoulder on the exterior, they are in great condition and I believe complete, right down to many internal organs! Each folds out in a series of layers, which I've tried to document fairly comprehensively and which doing for the first time I might say is pure delight! I believe these were