Yep, 1969 as I recall admiring bikes at the Schwinn Shop, might have been a 1970 model thing. One could reference the Schwinn consumer catalogs... with prices as Schwinn was “fair traded”
Peugeot was late to make them standard. Like 1977. And their solution had less slop in the system. Prior to that while working at a bike shop in the 70’s, bike retailers loved to be able to add them on as an accessory- there were a few different suppliers of custom pivot pins that accepted Weinmann or Dia-Compe “comfort” levers, we never called them safety levers.
we could make the exchange really quick two drift punches, two hammers, one to buck up the lever from twisting- required a second mechanic for all of a minute. The new pivot was retained with a belvel spring clip.
xtra profit at the time of sale... kickstand, lock, saddle bag... if lucky, shorty fenders and a generator light! The lights and racks were popular during the second gas crisis in Spring 1979.