That will be a hard find and will probably not be in any better shape than the one you have. The lock cylinder should be the same as Ford/Mercury of those years and widely available. A good chrome place that deals with pot metal can fix and chrome yours but will be costly.
I always thought that those were really cool. I wondered why no one else came up with a similar way to cover the lock. Thanks for the memory and good luck with your search.
The Jalopy Journal
