Here is another bike I picked up this week-a Westfield Lightweight. The number under the crank is F34110, and according to the charts at "Mr Columbia" this would make it a 1941. Could this be possible? I thought a bike of that vintage would have a skip-tooth chain, instead of this 1/2" pitch chain. The rear hub is a musselman-the first of that type I have seen. I bought it to use the fenders on another Columbia I just bought, but this bike is growing on me. Too bad my wife doesn't know how to ride a bike (She grew up in Korea, at a time when girls didn't ride bikes)