Red Mickey Mouse Mold-A-Rama from the Henry Ford Museum in Dearborn, Michigan, available during the 2022 special exhibition of Disney costumes.  This appears to be from a standard mold - it does not mention the museum on its base.  The only inscription is "MICKEY MOUSE" and "© WALT DISNEY PRODUCTIONS."  About 5.25" high.

New condition.  Photo shows a representative sample. Your item will be similar, and will not have any soft spots or other defects.

I have not cleaned or trimmed the toy.