Happy birthday, dear roundel
The London Transport symbol is 100 years old this week. Here it is, in the upper left of a 1938 Man Ray poster, which appears to offer the prospect of a ride through multiple zones (a tip of the hat to The Guardian website and its gallery of old LT images).
Some (not entirely) unreliable factoids: • “Roundel” is the heraldic term for a circle, though in modern usage it tends to be used mainly for rings or concentric circles, like you see on the sides of warplanes. • Arguably, the LT roundel is much more recognizable than any old airforce’s. • The Toronto Transit Commission’s logo is called a “pylon” but this seems to have more to do with electricity than heraldry.