NP, probably a Roadmaster or Western Flyer badged bike. The serial numbers on those AMF's won't ID the year, so it's the parts that show the age. It also has the seat stem that tightens like a handlebar stem, that shows it as 50's or early 60's, but the spiral sprocket is definitely 50's, they came out with the famous star sprocket in the late 50's after that one. It looks to be in fairly good condition and all there, even the original seat, but the pedals aren't original. The sprocket looks like the right one but it is very clean and shiny, so I think they changed out the crank arm, it looks newer than late 50's. The other crank arm might be the right one. What I like is the frame dimensions, laid back angles just like the men's frame so it will cruise just as well. That's a carryover from Cleveland Welding Company bikes that AMF evolved from.