Joined: Jan 2010
Posts: 9,809
Likes: 1,784
From: Northern California
Bikes: Cheltenham-Pedersen racer, Boulder F/S Paris-Roubaix, Varsity racer, '52 Christophe, '62 Continental, '92 Merckx, '75 Limongi, '76 Presto, '72 Gitane SC, '71 Schwinn SS, etc.
Dropout looks Huret-specific, so I think that Chas is right about the derailers/shifters being original.
I didn't know that Helicomatic hubs were yet a thing in 1975(??). Perhaps there is a date-stamping in the center barrel of each hub(?). The rims and chain sure do seem correct.
This is a very good bike.