I've ridden a handful of centuries on this Eros, a '91 I believe. As pictured, it weighs about 24 lbs.
Over the years, I've improved in condition and tweaked the fit from upright to more aggressive and stretched-out, and it seems to be a pretty fast bike at this point. My hunch is that the right positioning (striking the right compromise between aero and comfort) will get you going faster than losing a couple pounds off the bike.
I think the Eros was always kind of an entry-level road/sport-touring bike, not too heavy or light, with mid-grade componentry. Perfect for my needs, and even though I have several other bikes at this point, I still reach for this one first if I want to zip along.