Gilco Design was a subsidiary of A.I. Colombo, the company that produced Columbus tubing until the name was formally changed to Columbus in the late 1970s. The company was created in 1947 by Gilberto Colombo, son of the founder and plant manger at the time. Gilco was originally setup to design chassis for sports cars,with Ferrari being an early customer. They have also produced designs for other notable marques such as Alfa Romeo, Ghia, Lancia and Maserati.

In the mid-1980s Gilberto concentrated his design efforts on the bicycle, producing the Gilco tubeset for Colnago's Master. Other bicycle projects include the Cinelli Laser bicycle and Columbus MS tubing. Gilco's design portfolio is quite varied, extending from furniture, to sailboats and even houses.

Given that the bicycle is a Cinelli, it probably is Columbus (check the steerer tube). However, many frame builders performed their own crimping and their were some other stock fluted tubesets from companies like Oria.

The earliest fluted tubing I've seen have been on boom era, entry level, Japanese models, though it wouldn't surprise me if the concept goes back much further.