According to "The Dancing Chain" it was an indexed derailleur introduced to the European market (...only?), in 1982. I've never seen one either. Looks to me like it may have been intended for hard use on City bikes? Not real pretty.
Doland cheung inquired:
Anybody know what this thing is?
ebay item: 220154634154
BOB HANSON, ALBUQUERQUE, NEW MEXICO, USA
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