Saturday, I stumbled on a Centurion Semi-Pro behind a shed among the leaves after following a vague Craigslist ad. I will post a separate thread about the bike, but it's a grey/silver color with the same component group listed in the 1977 Centurion catalog for the Semi Pro (Gran Compe calipers, Cyclone derailleurs, Mighty crankset, SR stem bars and seatpost. Of course, it's a chromed frame with only the lugwork and dropouts exposed. And...it's in my size, too.

Serial number = M7B01548, so 1977, late January, 1548th frame. PG

The only changes made sometime in its life were:
- mavic rims laced to Phil Wood =8^O hubs, keeping the 120-mm spaced rear
- Shimano 600 downtube friction levers instead of SunTour