According to Peter Kitchingman in his book on Canon rangefinder lenses, Canon made about 15,000 of the 35/1.8 lenses and about 35,000 of the 35.2.0 variety. Not a lot by today's standard, but a respectable amount for the 1950's.

Both of these lenses pop up over on RFF every so often. There's a 35/1.8 on RFF right now for $375.00 USD.

Jim B.