What year?

[Monark52]

Any idea what year this Flightliner is? I like how part of the badge resembles headlights. Shes getting a bath and fresh grease and hopefully i can sell it to some hipster!

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[Wildcat]

JC Higgins was before 1963. That bike looks late 50's to me. Murray made, the serial numbers on bikes sold by Sears had the model number in the serial number. You can look them up in the catalogs to find the year they were offered.
Is there a horn in the tank? If so, it may have batteries which might have a year on them.

That bike is different from the usual. It was a tank bike, and instead of headlights, it has a blank that is also the head badge. I've never seen that.

 

[Rustinkerer]

That chain guard was only used the first 2 FL model years, 1958-9. -Adam