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
Los Angeles Police Department Memorial for Fallen Officers for the project. The wall is made up of more than two-thousand brass alloy plaques, two-hundred-two of which are inscribed with the names of fallen police officers. From a distance the memorial appears as a solid wall of lit brass. As visitors approach, it becomes evident that the wall is in fact a vast assemblage of discrete, engraved brass plates, seemingly suspended in air and light. This form dynamically honors the LAPD both as a collective whose duty is to protect the public, and as individuals whose role is to serve the public. The brass alloy is a reference to