Help my identify this bike. (3Rensho? Specialized Allez?) Help my identify this bike.
Looks like a 3Rensho or early Specialized Allez but can't find any bikes with same features.
Any info on brand/years, possibly frame size would be welcome.
Not a complete answer, but you can measure the frame size yourself with a measuring tape.



Its not exact, but you'll see to within a centimetre or so.  Road frames normally came in steps of 2cm or half an inch, and sometimes came in 1cm increments for top-end bikes.

Other measurements like top tube length can be measured by starting in the middle of the butting tube.