Shown in the 1963 combined Cinelli/Columbus catalog...
Columbus butted frame tubes for road races:
-No. 1 - Type "SP" butted 0.7/1.0 - weight kg. 2,375 per set - Strada Pesante (Road Heavy)
-No. 2 - Type "SL" butted 0.6/0.9 - weight kg. 2,065 per set - Strada Leggera (Road Light)
Columbus frame tubes for track races:
-No. 3 - Type "PS" for Sprint and 6-days-races - weight kg. 2,435 per set - Pista Spiccato (Track Strong)
-No. 4 - Type "PL" for pursuit or record-races - weight kg. 1,830 per set - Pista Leggera (Track Light)
Cinelli & C. S.r.l. was the sole sales representative worldwide for Columbus tubing starting in the early 1950s.
~ Chuck
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