The inner plate is stamped "N.C.R & Co" together with "PAT. The piece would benefit from cleaning. Type: Skirt Lifter / Dress Clip. Patent: Marked "PAT. About Antique Endeavors. Maker: N.C.R & Co. If you are interested in future pieces similar to this one, you can search online for Antique Endeavors to learn more about our work and collections.