If you're looking for a bass to gig then don't get a vintage anything. Get the one that plays the best and sounds how you want it to sound and you don't mind getting knocked over on a tight stage.
I've seen videos of top US session players talking about their gear and they will aim to take about 6 basses to a session and let the producer choose. They all seem to include a late 50's or early 60's P bass with very old flats. That kind of detail gets noticed on a recording session but won't notice much anywhere else.
Several long time Fender players switched to gigging with Lakland basses, Duck Dunn, George Porter Jr, David Hood etc. That would be my direction of thought.
If you just have to own an old bass just be aware that Leo Fender could put out a turkey and regularly did. There are a lot of myths around Fender basses old and new, so don't believe any "experts" on the internet. There have been good and bad Fenders in all eras. For investment purposes just buy the oldest, cleanest Fender bass you can find, put it under the bed, because it's an investment, and start looking for that Lakland.