Squier is Fender's brand name for their import series...the serial numbers
don't follow the same scheme as the Fender-branded guitars and basses. I'm
pretty sure that the first Squier-branded instruments appeared in the
early-to-mid-80's.
If you know someone who's been playing awhile, ask them to check it out for
you. There are certain problems that can make a bass unplayable; a twisted
neck for instance.
If it checks out, it's probably a pretty good starter bass. If it's in good
condition, you'll probably pay around $100 US for it.