So Boydie just shared some images of his un-restored Auto (#120875) on another thread. Interestingly, a couple of things are of note:

1)It has unpainted axle housings
2)It is running the first type starter.

Looking back through the threads at other examples, we can now confirm that they stopped painting axle housings between #118746 and #120875.

In addition, the first style starter (without the pin) was used up until at least as late as #120875, with the intro of the second style starter no later than #122228.

Looks like the posibility of losing My Precious has got me all fired up again
cry