A very clean AMF made bike. The pedals don't show any wear at all. It is probably a mid to late 60's bike, judging by the sprocket. It looks like the original owner added the seat and carrier, probably when it was new.
Thanks for the info on this bike from everyone. I wasn't sure about the seat either because the tag on the back says Western Flyer on it. Does anyone have a pic of what the original seat would look like?