Haven’t played a vintage, but I’ve played a few Nash basses in the past, owned a JB63 and still own a PB63. No idea why I sold the JB since it played like a dream and sounded great. The PB63 has a great feeling neck. Mine had the Dimarzio pickup which I swapped for a Duncan Steve Harris model. The PB63 has lasted the longest in my collection. I can’t offer you a comparison but I can tell you I’m a happy owner of what I have.
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