I only meant "low end" by De Rosa standards - they didn't make anything that was actually low end. But for the timeframe in question, I'm pretty sure that De Rosa's top-end steel frames - particularly the Professional and the Primato, all used either SLX, Max, or EL tube sets. Which is why I tend to think this frame is more likely a San Remo or Super Prestige or similar, which were slightly lower cost De Rosa frames than the Professional and Primato. Along those lines, this frame doesn't have some braze-ons that the higher-end ones likely would have, such as a pump peg, a 2nd set of bottle cage mounts, and internal cable routing.