"I suspect your Oriole has a serial number more in keeping with MO bikes rather than Westfield bikes and I would be very interested in knowing how the bike is stamped if you would be willing to share." Good eye, Phil! I'd always associated the curved seat post bikes with Murray, but a quick scan of the Elgin book, and I realized you are correct, sir! I dashed to the basement to investigate. the crank hanger is stamped S62081, very close to the bottom tube. The digits are unevenly spaced, and aren't in a straight line. they look like they were all from the same stamp set though. Perhaps these are rare due to durability problems. This frame has the top tube brazed all the way round, and one side where the second tube meets the bottom tube. Have you seen any original Elgins with this sprocket? I think the rear fender is a replacement, as it has red pinstripes. The catalog lists black with ivory accents, as are on the frame. It does have flat riveted braces, and is a gothic peaked fender as per the catalog. Ah, the tangled web we must unweave to determine what was original!! ~Adam