>>1992019That's a pretty modern frame(to me). My guess would be mid to late 90's since it has a carbon fork, split face quill stem, brifters,and a sloping toptube.
I agree on people being bad at measurements, I generally don't even ask and just look at the headtube length, but I buy 56-62cm steel bikes so it's easier for me.
Just keep looking, and since you already have a bike or two only look for deals.
Those low spoke count shimano wheels are cool and would work perfect for most riders using that frame.