I don't think these had a makers mark or any mark for that matter. Seems to be kinda slipped into Confederate hands. Sorta a mind thing that we have tinned copper dishes , you have a rusty tin dish. Then again why aren't more being found, like by the hundreds? Were they only for officers? I don't think soldiers at that time left much behind, carrying every possession, no matter how meager into battle with them. Most likely, carrying their possessions with them until the wars end, or their untimely demise. I think its safe to say that if a soldier lost a weapon, or his only possessions he probably was no longer around to look for them. Its apparent that after a battle no clean-up crews were sent in to tidy up. Look at all the artifacts found on the battlefield at Shiloh. May be the surviving soldiers had orders to bury everything where they found it. No one knows for sure. I read somewhere that the hospitals back then, looted the dying solders few possessions, taking everything of value from the dying soldiers, whom they buried nearby, and items of no value were discarded, you know the stuff I'm referring to. like a soldiers mess plate.