[K7Sparky]

The patina makes it look like the plate has not been gone too long.

If you haven't had the 42-350 too long, might think about the price of brass at scrap yards.

Might take a picture to your local scrap yard and see if it has found it's way there. My local one lets me wounder out looking for treasures, but that's small town behavior. Brass collects slowly so there may be a slight chance.