Columbus SLX and SPX
I pulled the BB and checked the down tube, seat tube and chainstays how Dave Moulton recommended. 6 raised spirals. It is a dirty job but now the tubing has been revealed.
Check out the vintage Serotta decals on the pearlized white and the ornate lug work. Anyone know what the two tapped holes were used for on the drive side Campagnolo drop out?