Originally Posted by
SJX426
@
jiangshi - Do bikes with the Diamante CS typically have the BB shell shown above with the hole for the cable and reinforcement of the CS lugs?
Do other CS configuration also lack a CS bridge?
The bridgeless chain stay appeared in 1986, the Diamante stays disappeared in 1988, came back in early 1990's. The chain stays were Diamante prior to 1986, The engraving on the seat stays changed from horizontal to vertical after 1986. Of course, all dates are approximate. I think De Rosa moved to the new factory sometime in 1988.