OK Fellas:
Here is the only pix I have at present, of the insides of a Mills "FireFly" Shocker. (Not Mine). The only major item
that appears to be missing, is the Dry Cell Battery, which goes in the hanging metal loop. The machine screw in
the upper left, with nothing attached, I don't remember what goes there. I would look at one of mine, but can't
get to them at present.
Hopefully the machine in question here, is a Mills, because if it is the later model by Advance, the parts may differ
slightly, especially the coil. If you have to resort to doing a rewind, it is very tedious work, as the wire is very fine,
and has to be mic'd for the right gauge, and has to be the exact amount of windings, to be correct.
Good luck, Bill