SOMEC isn't so much a single builder as it is a collective/cooperative of builders operating under a common brand and to a set standard. That was much moreso true back when all their bikes were steel as opposed to nowadays in the age of carbon fiber made by a Taiwanese factory to SOMEC's spec.

Every SOMEC from that era is different. All were made to order. Some SOMEC members were a little more ornately-inclined than others, which is why some have cutouts in every lug, with every lug point thinned down; and others were more "form over function" guys and didn't bother with outrageous paint jobs and cosmetic touches. The last factor, of course, was the wishes of the customer himself.

What all SOMECs do have in common is a construction quality second to none. A that time, when an Italian bike was not only being gorgeous and gave a great ride, but also usually had poorly applied paint and decals, obvious file marks, gaps in the brazing, and its frame was delivered terribly misaligned. SOMEC decided to forcibly buck that trend by having all the things the Italians were known and beloved for, but also be perfect in their execution.

Now, track frames would probably have been built with something from the "lower" or heavier end of Columbus' spectrum anyway, because the top-end superlight Columbus tubesets of that time were not really strong enough to make for good sprinters' bikes.