Did the finish vary throughout the years?
looking to refresh this 1994 model but its a little confusing on how it should look. Some examples are a high polish (like a Xizang) , some are lightly brushed, and some are untouched so have that natural patina to them.
How was they done when new?
Generally all the same finish per season/production run, not high polished or super shiny. From 1990 to about 1996 it was lightly brushed, a more muted finish (and my personal favourite). Thereafter it was less brushed but not in your face shiny. My theory is because they started painting the frames (for the teams, and then as standard in 1998 for some frames), I suspect the paint takes better to a smoother surface.