In the spring of 1976 I bought a silver with a brown seat, Sekai Competition. A freind had bought a black one. I put alot of miles on it for a few years and then it sat several years. I gave it away and l got it back in 2010. It is sanded down and completely apart. I had to find a few old pieces, but I think other than the decals I have everything now. Serial # is 76B91533
Can anyone tell me anything about this bicycle? I knew nothing about it whenI bought it and little more now