So about what year did brake & shift cable guides along with DT shifter braze-ons become mainstream? I find it odd that this frame has no brake cable guides but does have shift cable guides on the bottom bracket. Maybe they were added when the frame was repainted? The 2 most notable things about this frame to me are that the seat & chainstay ends are filed perfectly square to the dropout as are the ends of the fork blades. Also the lug for the toptube and headtube is strange to me in that the underside point of the lug is as long as the top and has the same tear drop window cutout. Kinda weird....Can anyone point out any other frame builders that used a similar lug set with teardrop windows?