Elusive map light rear view mirror

[calif454]

My 70 SS has the rear view mirror with the map light and is showing signs of age. (mirror needs to be re-silvered...) I would like to replace it, however, my extensive searches to locate one have been unsuccessful. Does anyone know of a parts company who sells this type of mirror? My only other alternative is to take it apart and have the glass re-silvered.

Thanks
Mike