Originally Posted by
farmboy904
Hello all.
Just joined up as I have a vintage BMX frame which pops up occasionally in the BMX collecting community and which is generally regarded as a Sekai, but which has not been definitively identified as such. I'm hoping perhaps someone here can shed some light on the subject.
I realize this thread has dealt exclusively with road and mountain models up to this point, but the serial on my frame, 77F0 353, seems to correspond with the format of the 3rd through 5th bikes listed in post #11, so I though I'd give it a shot. I've also emailed the folks at Yellow Jersey in the hope that someone there can help with an ID.
I've enjoyed reading through this thread, very nice bikes. Thanks in advance for any info. Here are some pics.
Jim Berard
Villa Park, IL
While your frame has the same serial number format of some Sekai bicycles manufactured during the late 1970s, it does not appear to be a Sekai. All Sekai frames were contracted manufactured by various source who manufactured for multiple brands/companies.
I have a Sekai catalogue which I've dated to circa 1978 and while it shows two CrMo BMX frames, the characteristics do not match yours. Neither frame has the head gusset. Nor do they exhibit the box bridge behind the bottom bracket shell or the rear triangle stays fabricated from a single bent tube.