I think it was at a race in early spring of 1976. The Michaels Cyclery racing team shows up with jerseys with vertical lettering on the sides, under the armpits, so that it reads Michaels when the rider is stretched out on the bike. Same was true on their shorts. Michaels spelled out on the sides, not horizontally along the bottom of the shorts. It wouldnt be too much longer and the one piece lycra skin suit would be common. But that first sighting of a Michaels rider, and it was a guy from Madison , WI, can't remember his name, that ushered in a new age of bike racing.

So my friends and I would refer to, "back in the days of horizontal lettering on wool shorts". That defines vintage to me.