Nope, Charles, that derailleur is 100 per cent original and one of the rarest of the rare being one of the earliest version of the delrin Simplex Criterium derailleur. That and the white delrin shifters are too cool. Both are identical to those fitted to the white PX-10 that Peugeot presented to Soviet cosmonaut Youri Gagarine during his visit to Paris in '63. I wonder if that will ever surface on a Russian eBay?
I think that settles it.... my '62 PX-10 for Saturday's ride and my '69 for Sunday. Or maybe my '81 or my '85.... it's always nice to have a fleet.
Peter Kohler
Washington DC USA