Pinchbeck is an early form of brass named for its inventor, Christopher Pinchbeck, an 18th century London-based watchmaker as an affordable alternative to gold. This c.1780 42" chain is crafted in the so-named metal. Each large, heavy link of the is stamped with a pattern of little dots and circles resembling tiny bullseyes with a matching barrel clasp. Outstanding quality and in immaculate condition.