A comprehensive serial number log is one thing I have always maintained; not sure why?
I left Rocky in 1989. I did built a lot of Altitudes though under contract in the early 90's. The BB shells came pre-numbered though so I couldn't tell you much about the serial numbers. The ones we did had the angle cut seat collars (top and bottom), monostay rear ends, painted in the Red/Yellow masked scheme.
Hope this help.
That would be mine then, they are afaik the 1991 model year ones (used a noodle for the front mech routing and in 1992 they switch to a 'flat bottom seat collar, though used the same general design but different tubing.
http://www.retrobike.co.uk/forum/viewto ... 845#502845
Anyway wouldn't happen to know the actual colours used...
derailing this nice RekTek thread though