Actually if you look it is decaled Record du Monde which was always the gas pipe model so far as I remember. I have parted out my share of Peugeot bikes and whenever I saw that name it was a low end bike. I cannot explain the Nervex lugs unless they ran out of low end frames and had some orders to fill and used what was around. Either that or the fork was changed out. No photos of the fork crown so it is hard to tell.