Out of curiousity does anybody have any info on Shimano Positron deraillers? I pick a old no name bike with one last week also seen one today with 2 cables going into it . The one bike shifts flawlessly the second I didnt buy yet. Thinking of adding it to my collection. Are they hard to come by, I like to have them for historical reasons I guess owning a bit of history of shimano deraillers. Any input would be appreciated, thanks for your time.
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