Especially needed for stuffed animals, this white plastic casing or shell is a housing only. It will accept the Sankyo 18 note Gold mechanism and the currently made white metal mechanisms. they will not fit Toyo, Fuji or the much older Sankyos.
The casing measures 2 1.8" x 1 7/8" x 1" high and comes with 2 screws to secure mechanisms. Simple to install.