DISRAELI GEARS
This is a SunTour V GT (4900) branded up for Vista by simply changing the embossing on the outer parallelogram plate.
The date of this derailleur indicates that Vista were possibly own-branding quality SunTour derailleurs even before Schwinn had taken the historic step of own-branding the Shimano Crane as the Schwinn GT300 Le Tour .
Ref. 18
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American Bicyclist 1973 - Vista ad
American Bicyclist 1973 - Vista ad