Johnson Matthey bars are favored for their easy to store size and low premiums over spot. The Johnson Matthey stamp that has JM next to crossed hammers on any of bars indicates a Johnson Matthey product, and thus the reliability of the silver content. Investors favor these bars due to their high quality and the company’s extensive and exemplary history.
It’s been almost 200 years since the establishment of Johnson Matthey, and silver bullion minted by this precious metal leader are still highly sought after. Johnson Matthey invented and manufactured the very first catalytic converter to control vehicle pollution at their Royston plant in the United Kingdom in May 1974, which to date has been their crowning achievement.
Johnson Matthey, also known as JM, has received many of the Queen’s Awards for incredible advancements in not only precious metals, but also innovative manufacturing. Today, Johnson Matthey has gone from a precious metals assayer’s dream to one of the world’s leaders in science and development of technologies for clients all over the world. The company began with a young man’s dream to become a gold assayer, when Percival Norton Johnson, in 1817, launched his first business. Silver bars are manufactured by several private mints including Johnson Matthey, located in London, England.