As with most of these questions, the decision depends. First, how much do you like the guitar? Is it worth $400 and easily replaced? If you love the guitar, don't trade it. Second, is this the bass you would buy outright if no trade were involved? Don't just make a deal because one is offered. Third, have you inspected the bass to make sure the truss rod is working? (No to the third question, but I threw it in just to keep you on your toes and remind you that buying/trading an instrument isn't something to take lightly.) That said, the Japanese Fenders from that era are fine instruments rivalling their American made counterparts. This particular specimen looks like it was modded, used and loved. Not a bad start. Lefties are usually higher in price than right handed models (if you can even find one). The specs are based on an early '60's Jazz including the grounding strip from the bridge to the bridge pickup cavity. A rosewood dot neck is correct as is a tort guard. I'm not sure, but the "A" in the serial number may indicate an A neck (Fender's code for a 1.5" nut width). This is also true spec for that instrument. In summary, if the guitar to be traded wasn't one highly valued by you (one with sentimental value), I'd jump on this in a heartbeat.