Boris Karloff visits the Universal Make-Up Lab. On the table is the Mummy from "Abbott and Costello Meet the Mummy, a Boris Karloff Life Mask, and a Glenn Strange Frankenstein head from "Abbott and Costello Meet Frankenstein".
This is what appears to a prop of King Kong from the 1976 version of the film. The film had a scene which used a giant animatronic Kong and this looks to be the mold of that animatronic. If anyone has more info on what this actually is, please let us know.