rumpler C.IV production batch

[m_goddijn]

Hello,

I have a question on a Rumpler C.IV that was interned by the Dutch army
picture: http://kw.jonkerweb.net/index.php?option=com_content&view=article&id=448:rumpler-civ&catid=66&lang=nl&Itemid=500&showall=&limitstart=1

It's registration was 7615/17. Was this an early or late rumpler C.IV as produced by wingnut wings? I think it was a late machine but can't find any references on it.

Another probably very difficult question:
If it's a late machine does it have an early fuselage with stitching running to rear of the fuselage. Or did it have a ply reinforced fuselage.

Thank you, best regards Michiel.

[m_goddijn]

Thank you very much for your answer. And in case of the plywood fuselage, with WW1 aircraft it's often very hard to tell what the precise version it was. Pictures are not to good and it also wasn't standardized massproduction. So it will be a guess.