Original Eichler fan cover plate

I am looking for an original Eichler bathroom metal fan cover plate. As far as I can tell the fans in the kitchen and bathrooms are identical in my 1958 Eichler. I know these fans are originals because my friend who is an original Eichler owner has the very same ones.
If any one is remodeling and throwing out their old cover plate I would be interested in buying it.
Thanks, Leslie