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Good researching there!
Your bicycle is not in the PX10, PR10, PA10 family of models.
One feature of the bicycle I forgot to mention earlier is its vertically drilled brake bridge. Most Peugeot models have a brake bridge with the brake caliper mounting hole cut perpendicular to the seat stays. On your model it is cut parallel to the seat stays. When this feature is present the machine is usually one of the "utility" models. Some of these models were fitted with the Altenburger Synchron brakes we see on your cycle rather than the more commonly found MAFAC centrepull model brakes.
Think it unlikely you will discover a catalogue or brochure showing your exact bicycle. The forum has had several Peugeot bicycles posted which matched a specific model save for one small feature or fitting. If you imagine the situation of a production line where one ingredient in the recipe runs out of stock the first instinct is to keep things going via a substitution. In the case of your bicycle this one striking substitution is the presence of the NERVEX Professional lug set.
As regards possible production line substitutions -
The 1973 date shown in the wheel rim image below places the bicycle squarely in the middle of the "bike boom" which went on in the U.S. during the early 1970's. Many bicycle manufacturers had to scramble for parts to keep their production going and substitutions were commonplace. This could easily have affected your example even though it was not intended for the U.S. market. Hence the NERVEX lugset. Most bicycle catalogues & brochures feature a fine print disclaimer stating something to the effect of "specifications subject to change without notice."
Here are two images showing what the bicycle's Simplex Criterium shift lever set should look like when correctly assembled:
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