I have a Sekine that I picked up at a Goodwill. It does not say "World's Finest Bicycle" It does have the "diamond" headbadge and the derailler (at least the rear was a Suntour Cyclone MkII Dia Compe Center pull brakes Sunshine hubs (I think) Can you Identify this bike from what I have said so far? What kind of tubing and place in the line up? I can get more details if necessary, right now I'm at work.