it is Columbus SL tubing or a mix:
''the "SL" decal wasn't introduced until sometime around or after 1981/2. Up to that time, your "acciaio speciale" sticker meant that the tubeset was a full SL ,SP or a mix depending on the builder and frame size''.
it is Columbus SL tubing or a mix:
''the "SL" decal wasn't introduced until sometime around or after 1981/2. Up to that time, your "acciaio speciale" sticker meant that the tubeset was a full SL ,SP or a mix depending on the builder and frame size''.