Right and also it would not all have been unusual for a customer to spec different parts on a new bike. No one cared obviously whether the bike was according to specs back in the day and the parts that that were picked out are consistently high quality items from the 70s (first gen stronglight 99 crank, atom 700 pedals, nice ambrosio clincher rims laced to tipo high flange hubs, weinmann 610 centerpulls, ideale 80 saddle, campy NR seatpost, and the derailleur group consisting of a suntour VGT RD, suntour compe v FD, and barcons). Certainly the suntour derailleurs were likely the best available in the 70s. These are nice mods that a knowledgeable shop/consumer picked out (even if it is difficult to figure out which is a mod and which is original with some of the parts).