These seesaw covers fit Nishijin Shiroi Kamome machines from 1972 through about 1977. If yours is missing you know how frustrating it can be to find a replacement, and on most machines out there they are indeed missing leaving an ugly hole. These replacement covers are made of translucent plastic from molds taken from the original part. We have used them on dozens of restores that need this hard-to-find part.
Shipping is free on this seesaw cover.