Originally Posted by T-Mar

This one is a real puzzle. The decals point to 1988-1989, while the serial number is from early 1989. However, that's too earlier for a Superset 2 style downtube which was oval at the BB end, with the major axis oriented laterally. The components are Shimano New 600EX, which are 1984-1987. Since it's friction shidting, their likely from the earlier half of that time frame. It appears to have been completely rebuilt with non-OEM componets, as even the headset wouldn't be orignal. There's no front derailleur hanger, so we shouldn't be looking at Columbus SPX/SLX or even SP/SL. The Cromor decal is probably correct. During this era, Canada received Brava manufactured in Italy with Cromor but I don't recall then coming with a Unicrown fork and they didn't have the Supereset 2 down tube..