Originally Posted by
CyclesMakaron
A3677 Y - this should be a Corsa Extra, tubes unknown (not all SLX frames were marked with an X)
Z2896 M6 - Professional or Pro (all depends on brake bridge model) from early 1985, non-original stickers.
E2290 B - Aero 1981, Columbus SL, full version, logo-stickers may not be original. Fork original - "borrowed" from De Rosa.
Thanks for the information. The Aero is original decals. My dad purchased new and it has been in the family ever since. The pantographed stem cracked in the early 90's so was replaced with the stem you see. Other than the stem, tires, cables/housing, it is pretty much original.
I'll snap a pic of the brake bridge on the blue frame.