In September, I rode a century on this 1954 Drysdale:
and in October I rode a century on this J. Fothergill, which is from the 40's. I've actually ridden several centuries on this bike:
Also I've ridden quite a few centuries on this early 70's Lambert, which is set up as a three speed (currently with a fixed three speed hub):
I'm currently commuting on this Falcon of undetermined age (60's, I guess) but I rode a century on it about a year ago, so it counts:
I also have a 1948 Raleigh Record Ace, on which I've done a few centuries... but I can't find a good photo right now.