What does the serial number plate on the drivers side door jamb have stamped on it? Also curious if it is riveted like 51-on or screwed on like 47-50?
https://www.flickr.com/photos/advance-design_parts_co/8130552154/in/set-72157631870734114
https://www.flickr.com/photos/advance-design_parts_co/8130544440/in/set-72157631870734114

KMAC