This is just a guess regarding those J. Rodgers with the MIE stamped in the semi-circle, but it almost looks like an afterthougt where they put it. I've had a 7 day set of those with vulcanite scales (long gone) and a single blade with horn scales. So I'm guessing those were made very shortly after the aforementioned treaty went into effect and that semi-circle stamp was added. I could be wrong though, I was wrong once before.