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puzzled as to why the crown's fork blade sockets are (were left) so darn thick
crown resembles something one might see on a department store machine
odd that seat stay bridge is drilled whilst crown not
peculiar that they would put it up there on their sign without a cog; perchance whatever had been on there was "borrowed" for something else...
one simeple check you could make to narrow the field a bit would be to determine threading and tube diameters
me expectation is that ye shall find all to be ISO dimension
leaning toward the idea of an asian origin
serial placement and format could be a big clue as to origin if present
dating: doubt it could be as late as " '90's" since fittings appear to be early to mid eighties era
if you suspect fittings may be original to cycle their date codes could provide a time
spots to check for markings include backside of crank arms, portion of saddle pillar down inside seat tube, portion of handlebar stem down inside steerer, end of handlebar
there is a guide to the markings here -
The manufacturer's date on a bicycle's components can often be used to determine the date of manufacture of the bike itself. Many bike parts have a date code cast or stamped into the piece. Bicycle component dating
www.vintage-trek.com
evidently the assembler was unable to locate any track pedals to fit to the machine and so mounted these Sakae Ringyo model SP-100 road items
would not think them to have been original although they could easily be contemporaneous
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