Very nice rifle! Hard to find indeed, I like the French follower, normally I see jwh floorplates only, but then again, you don’t see many matching duv’s so not a lot to go on. Congrats! I can’t remember if there is a 41 in the picture reference yet, if not..
The Germans used a suffix system to mark blocks of 10,000 so no suffix, then 'a' and so on. They even got to double letter suffix on big build years 'aa', 'ab'.