Given the codes it's almost certainly a 1987 Alfa, as it was dropped for 1988. The Alfa was an upper entry level, sports model and 13th in Miele's extensive, 16 model, road line-up. Inital production used Ishiwata 022 for the main triangle but was later switched to Tange #2. Retail price was $435 US.
We had a couple of guys in with them in our club. They made a good, economical, club racer.