[Mills]

These markings are on a G Grade toplever 10 gauge, serial number 42427, that I recently acquired. I see what appears to be a worn "3" on the top indicating the frame size, but am not sure what the "6" means and cannot make out the other markings (which appear to be letters, maybe "JS" ??). On the back side is shown "427" which is part of the serial number, but also does not make sense. Maybe someone with more knowledge than I have can shed some light on this one.