What type of Columbus decal is this?
 

It's on a 1976 bike I just found. Double wings are period correct, it seems. "Columbus" was also printed as is between appr. 1974-1978. But gentlemen and ladies: what type is it? :foo:

I've not seen that decal before, but I suspect it means that the three main tubes (top, down, and seat) are butted chrome-moly (whether SL or SP gauge is anybody's guess); the rest probably high-tension steel.

Maybe a predecessor of the Tretubi decal?

I think John nailed it.

OK, thanks! I've been looking left and right but couldn't find the decal either; although the 'conico' can be found in one Columbus brochure as -I guess- a specific form of tube construction (CroMor, SL etc.): http://www.columbustubi.com/pdf/tube-sets-2014.pdf

It refers to the taper at the butted section of the tube. Even though it's not always seen on the frame decal, the SL and SP (and PL and PS) tube sets stated it on the box.

http://www.os2.dhs.org/~john/columbus1.jpg

http://www.os2.dhs.org/~john/Columbus-tubes.jpg

Thanks John, for this info! Really helps. :thumb: