This one's confusing. It doesn't appear to have a pump peg and 2nd set of bottle bosses, which would place it circa 1985-1986. The logo on the front of the seat tube also matches that era. However, the chainstay cable stop has the extreme rearward mount, which would put it no older than very late 1980s. It also has a head decal versus the riveted badge which was still being used through at least 1989. The tubing decal is also the style introduced in the 1988. Just looking at the serial number, my guess would be 1991.