I acquired this bike while a part time bike mechanic at Bumsteads, Ontario, California in the mid 70's, it has been in my garage ever since. I tried to research it on the web and found "Royal Flyer" from the mid 30's. Not sure if they are related. I am still searching for information. It has a New Departure rear hub. It is 'Skip tooth" so I am pretty sure it goes back to the 50's if not further. So far, I have not found a serial number. Any information would be appreciated