Just a tease for a longer post/video coming up later . . . I recently recovered this Revolutionary War era British brass cartridge box plate with the GR cypher for George III from a site here in the Shenandoah Valley. This image is right after I recovered it and before I cleaned it up. Though known primarily for its Civil War history, the Shenandoah Valley has a fair amount of history related to America's War of Independence as well. More to come later.
Some of these box plates are stamped brass but others, like this one, are the rarer cast version. I'm hoping that the other part of this one is in the vicinity and I can locate it at some point in the future. Below is what a complete one looks like.