any info on SIMPLEX Gran Sport rear derailleur?

jordic1968

Retro Guru
Hi
I just bough this piece because I was curious and to lear a little bit about, as I've never seen this Simplex derailleur but also cound't find any info on the net or in any catalog. Looks pretty similar to Record first type from late 50's and early 60's. Does anyone have any clue about it I'll appreaciate it
 

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jordic1968

Retro Guru
Thanks, sent him an email a couple of days back. I'll share if any fedback! Some pics after cleaning meaniwhile....
 

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