So I decided to spring for this set of Paul, George and Ringo, from tracks, so I assume it's good? Comes with a letter from the person who acquired them in May 1963. This will mean I now have a full set of Beatles autos. I acquired a Lennon Auto from Oct 1964, it also comes with a letter from the person who acquired. I got that one in 2014.
Total investment: $4600.
I guess I did alright. Yes? Maybe not amazing, might have been better off just buying a full set outright, but both come with pretty much Iron clad provenance and are from Tracks.
The set I just got (from 1963) and the Lennon auto (1964) are below.