Paperback writer was played on the Hofner 100%. I have recorded it myself in the style of recording that they used at the time, sounds the exact same. I also own a Rickie 4001S LH, I don't think it was used on paperback writer. Penny Lane was the Rickie, it's just kind of common facts that he wasn't using a hofner or fender jazz at that time. When I'm Sixty Four could be the Fender Jazz Bass, going through the same method I did with paperback writer I can get a relatively accurate answer, my uncle owns a 1980s Fender Jazz Bass so I used that for this experiment. Taxman is the rickie, going through the same method I figured out that answer. This is all subjective to the gear I used, I used a different microphone so I might be way off. If you need any more decetive work done on this, let me know here and I'll be happy to use my collection of basses and amps for this and share the results here.