The famous Reynolds 531 frame logo, enhanced to make the colours stand out in print.
The original hi-tensile manganese-molybdenum steel was introduced in 1934, and used by twenty-seven winners of the Tour de France. Reynolds’ logo advertised their patented tube butting process, a patent they took out in 1897.
As their advertising said at the time, “You haven’t got a bike unless it’s got Reynolds 531”
And, in 1976, “Reynolds, Tube of Champions.”