^could just be a stamp testing we loves to stamp on soft metals, when we hold on to a neat stamp this is very common when elder people visit factories full of buttons, there is no way to stop them testing those buttons lol
Johnson Matthey and Engelhard: Two Big Names in Silver https://blog.providentmetals.com/jo...hard-two-big-names-in-silver.htm#.X3XEyMIzbIU Engelhard became well known for making high-quality bullion products, like gold and silver bars. The company was even documented as the world’s largest precious metals smelter for a time during its heyday. However, Engelhard was bought by German company BASF in 2006 and now focuses on industrial metal, which eliminated the production of their renowned bullion bars.....