I usually put a low value on 1980s MTBs, but the Ultima is pretty special. Nitto anodized bull moose handlebars, full Champion cromoly frame, Sunshine cartridge bearing wheels, Suntour Superbe Tech RD, adjustable set back seat post, etc. Its really one of the best of the consumer brand MTBs from Japan for that era. Yours has some condition issues, don't know if the paint is faded that badly or did it come in different colors. There is a Univega catalog for 1983 out there on the web.