Cast bullion bar production represents one of the oldest forms of bullion smelting and refining. While modern minted ingots are produced using computer-controlled presses, stampers, and laser engravers, cast bullion bar production is far simpler. In fact, the simpler approach to cast bar production explains the lower premium associated with most bars on a price-per-ounce basis.
The Pony Express comes to mind when viewing the design element on these cast silver bars from SilverTowne. The Pony Express only operated for a year, but it left a lasting impression in American culture. This system for delivering mail, newspapers, packages, and other communications between California and Missouri entailed sending skilled riders on the fastest horses available across the growing American West. Riders would race between posts, switching horses on a regular basis. The Pony Express relied on a system of 190 stations along the route for switching horses, riders, and exchanging packages.