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Old 06-13-22, 06:36 AM
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Yes, that Columbus decal was introduced in late 1977, for the 1978 model year. The earliest reference material that I have showing Windsor with brazed-on rear brake tunnels and bottle bosses is a 1979 advertisement in a cycling magazine. The front derailleur on the subject bicycle appears to be the version introduced for the 1979 model year. These suggest that the bicycle is no newer than 1979. The long rear dropouts seem anachronistic. Normally, I would expect the short, Portacatena style dropout on a bicycle of this level and era but I have seen a couple of other Windsor Professional with these braze-ons and long dropouts.

The one feature that I haven't seen on any other Windsor Professional are bar end shift levers with dedicated cable stops and guides on the upper down tube. All the ones I've seen have had down tube shift levers, either clamp style or with brazed-on bosses. The 1979 advertisement mentions "brazed-on control lever bosses", which implies down tube shift levers. So, if the bar end shift lever set-up is OEM, it would appear to be newer than 1979.

All the Professional that I've seen have been Campagnolo (Nuovo) Record with Universal 61, 68 or 77 brakesets. However, I haven't seen any confirmed 1980s models and Windsor survived until at least 1983. Still, the presence of the Campagnolo derailleurs, seat post and headset(?) suggest that components such as the crankset, brakes and possibly the wheels, are replacements. It would interesting to know the patent date on the rear derailleur.
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