This Sun-Bow is a gruesome, Frankenstinian copy of an early SunTour Honor.
It has the folded steel knuckles, the ribbed black plastic spring cover and it has a jockey wheel that can be removed with a (plastic) wing-nut - all of these echo SunTour features of the late 1960s and early 1970s. Most disturbingly it has a slant parallelogram - but the slant is so slight that you can barely detect it - perhaps Sun-Bow were hoping that it would pass unnoticed by SunTour’s eagle-eyed patent attorneys.
What the Sun-Bow conspicuously lacks is any sense of composition, coherence or quality, which is strange because these are exactly the qualities that marked out Japanese derailleurs of the time.
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