c.1971 metric-gauge 531 Gitane Tour de France with Kogswell hubs, Phil Wood BB, Stronglight 93s running 45x17 fixed. I bought this to be a family beach week beater and it has become my favorite grab-n-go bike. Somehow it is the absolute smoothest running bike in the stable.
1973 Raleigh Competition, 531 with rapid-taper stays, running Dingle fixed cog/Dos Eno 2-speed freewheel, giving 70-in fixed pavement, 60-in fixed gravel, 60-in general freewheeling and 51-in light singletrack gearing.