Pinchbeck (alloy) Pinchbeck (alloy) Pinchbeck is a form of brass, an alloy of copper and zinc, mixed in proportions so that it closely resembles gold in appearance. It was invented in the 18th century by Christopher Pinchbeck, a London clockmaker. Since gold was only sold in 18-carat quality at that time, the development of pinchbeck allowed ordinary people to buy gold 'effect' jewellery on a budget. The inventor allegedly made pinchbeck jewellery clearly labelled as such. Pinchbeck jewellery was used in places like stagecoaches where there was a risk of theft. Later dishonest jewellers passed pinchbeck off as gold; over the years
Chase Brass and Copper Company Chase Brass and Copper Co. Five years later, private equity fund KPS Capital Partners LP subsidiary Global Brass and Copper Holdings, Inc. ("GBC") acquired Olin's worldwide metals business, including Chase Brass, and now markets products under that name. GBC is publicly traded on the NYSE under BRSS. Chase Brass acquires a license agreement with Sambo Copper Alloy Co., Ltd (now known as Mitsubishi Shindoh, LTD) to sell ECO BRASS C693 and C87850 exclusively in North America. ECO BRASS no-lead properties meet Federal and State lead regulations. Chase Brass sublicensed California Metal-X and Ingot Metal Company Limited to produce and sell