1978 Fender Precision. This is the A-Neck model, so has the Jazz type neck (38mm) and ideal for those without the chubby fingers or don't like the wider neck, but want a Precision. It's not after market before anyone asks, as they made a few of these in the late 70s.   Obviously, it might say 78 on the head-stock Ser No, but we all know Fender bits could lay about for a while before being assembled, so could be between Dec 77 to later. I've found the neck stamp is the best thin