Ground Down Pallet Bridge

We sometimes see the top of the pallet bridge ground down so that the balance wheel doesn't rub.   This is actually pretty common, unfortunately, and this watch is a prime example.  The original finish is gone for good.

The correct adjustment is such a case would be to true the balance wheel.  It's an important general principle of watchmaking never to alter a good part to correct for a problem elsewhere.

This particular watch movement is a 12 size Elgin grade 303.