1 Kilo (32.15 Troy Oz.) Vintage Johnson Matthey Solid .999 Fine Silver Bar *ERROR BAR*- This impressive bar contains 1 Kilo (32.15 oz.) of SOLID .999 fine Silver, and displays the Johnson Matthey mint mark, purity and weight on the front. Serial no. 005142. Johnson Matthey is one of the most recognized, trusted and respected names in the Precious Metals industry, and are well known for their high-quality bullion products. This particular bar is an error bar (please see photos of the back of the bar where you can see the word "KILO" backwards). Due to the outstanding quality control practices this assayer has, these types of errors are usually destroyed, and never made available on the open market. This is a true investment bullion piece, as the values of these error bars keep steadily rising. They have become some of the best investments over the years.