DISRAELI DOCUMENTS
I think that this mini catalogue was published as an insert in Bicycling and Velo News magazines in March 1977.
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Browse associated derailleurs.
Shimano 600 (6100) 1976
Shimano Crane black (DB100 2nd style) 1977?
Shimano Crane GS (DB110 2nd style) 1977?
Shimano Dura-Ace (7100) 1977