The Singer Ball Bearing Hand Operated Pinking Machine 121379 Pinker from 1930's is a vintage original collectible sewing machine accessory. Made in the United States, this black machine features the original manual, box, and clamp, making it a unique and authentic piece for collectors of antique sewing items. With its classic design and functionality, this Singer pinker is not only a functional tool but also a nostalgic piece of sewing history.

I have not disassembled the machine.  Has only the attached blade.  There is no rust on this beautifully preserved Singer sewing collectible.