Greg Parker wrote: (cut) 1978 was the transition year from first-generation to second-generation for the SR rear der., so 1979s would all be the late-style, and have the flat-head screws and Ti pivots. (Early second-gen. ones in 1978 had aluminum pivots, and the "old," bolt-from-the-front side-into-rear-pulley-cage-threads design...).
I'd say the year of introduction of the 2nd generation of SR derailleur with script logo would be 1977 not 1978.
Campagnolo Timeline http://www.velo-retro.com : 1977 Catalog #17a Supplement is printed for the year-end trade shows. Included are a revised Super Record derailleur with script logo and different cage geometry, single bolt Nuovo Super Record seat post, Record front derailleur with four holes in cage (later to be three holes), straight-band clamp (later to revert to traditional pointed-band clamp), short Nuovo Record dropouts without eyelets (drilled and tapped for chain holder), chain holder with accompanying control lever and trigger, and fixing shoe-plate for pedals.
Anyone have one with "Pat 77" on the upper body?
Chuck Schmidt
South Pasadena, Southern California