The mixte versions in my literature show racing saddles and dropped handlebars, so yours are probably replacements. I can't imagine a non-Shimano freewheel being original, given the vintage and indexed shifting. The spec'd tubing material is HLE. Peugeot never gave the ezact composition of HLE, but it's definitely not 4130. Most cyclists consider it hi-tensile or equivalent. Advertised weigtht is 27 lbs, which is what I would expect and near the upper end of the weight scale for a European lightweight.

It may very well be a Canadian manufactured model, manufactured by Procycle. They were shipping a lot to the US during this era. The tight profit margins on the low end models did not make shipping from France very profitable. Most of the lower end models were coming from Canada or the Far East. Generally, there is a reference on the tubing decal to the country of origin.