Re: "Flying Eagle", ever heard of one?
It has a lugged frame and a 3 piece, cottered crank set. Yet it's a 26x1.75 tire and rim bike.
This is an anomalous bike. I'm guessing it's either Dutch, Austrian or English made and built to American specs.
American cruisers of this type ( most likely late 50's through the 60's, generally have one piece cranks, and the frame tubes are lightly fillet brazed or pierced/internally arc welded.