My 1984 PH10L has a Carbolite 103 sticker that matches yours exactly.
More circumstantial evidence.

27" alloy rims drilled for Shrader valve on Maillard hubs with Helicomatic rear.

Have never seen a Peugeot catalogue for the Afgan or even Asian marketplace.
Somebody's memory is off because mine tells me that Carbolite 103 wasn't around in the mid 70s.