That's a Peugeot lion. If you Google for it, the design has changed a number of times, including even the way it's facing.
If you showed more of the bike, people might say more?
Mafac brakes were regularly used on Peugeot bikes, not sure about these.
Check the rear of the brakes for any markings put there by the manufacturer.
Do a search on Google for that year of that bike ands see what the original spec was? Look for a date stamp on the rear of the brakes or the hubs if unsure.
I have never seen a sidepull mafac🤔
The y have a look of Dia-Compe, to me- but from later than 84. Why do you need to find out?!