Dating your fender bass
Leo Fender never intended for his guitars to become collectors items.
A guitar neck could have been produced in 1956, then slapped onto a body in 1957 and if late enough in the year pickups may have been put in early 1958.
The best option for getting a close production date is to remove the neck from the body.
Dating a Fender Guitar by it’s Serial Number can be a little tricky.
In most cases you can only get a ball park range for your production date.
Most notably, production dates have been penciled or stamped on the butt end of the heel of the neck of most guitars and basses, although there were periods when this was not consistently done (1973 to 1981, for example) or simply omitted.