To wind it up, just turn the key. There is a stopper on the side, too, that works most of the time. The music box is in great condition and seems to be complete, but the paint is flaking off the platform and large areas of the base. Please look at all pictures and zoom in. It is very rare, not new and perfect, but charming.
It measures about 8 1/2" tall and 5 1/2" wide. Dates back to the late 1940s. Comes from a clean and smoke free home. Please ask, if you have any questions about this item!