Did someone win the tour on a fixed?

fixer Isn't that the Campagnolo Cambio Corsa? It's not fixed, it's not even ss.
I think it's a bit of myth that tour riders ever used fixed, the flipflop hubs would have been ss on both sides.

No idea about retro stuff.
As for fixed tours: http://www.63xc.com/willm/tdef.htm
"The event was in its fourth year before a competitor risked riding on one of the new-fangled BSA freewheels!"
"Woodland quotes a 1920 report from one Vernon Blake detailing a gear setup which would make good sense today: a flip-flop hub with 65" and 48" gears, often double-fixed, but with many riders preferring a freewheel on the larger cog for fast descents."