Have intended to research and post this since GIBBONS’ TOY STORE burnt down, now several years ago — in the window at the end of this very extremely weird only-in-a-bad-dream wedge-shaped shop, which in many ways resembled a half-open portal into the HELLRAISER dimension, sat two gus gutz dolls, one black one white — “Plush Internal Organs Toy: Gus spits up his innards for inspection, then they tuck away back into his pocket mouth.”
I have never seen them “on sale” anywhere else, let alone in someone’s home.