Rumpler Data Plate ID needed

[colt59]

I'm trying to identify what model aircraft this was from. I found it taped in my grandfathers WW1 photo album. I know it is German, Rumpler, and is the fuel system schematic. I suspect a C-Type. It may be common to all Rumpler aircraft, but it would be nice to narrow it down. There were really no clues in the album. No downed Rumpler aircraft..etc. He was a mechanic in the 2nd Company of First Air Service Mechanics Regiment of the AEF. Served at Ville Sauvage, Etampes, and Haussimont Aerodromes. Writing on the page also indicates that he had the magneto for this plane as well (I have no clue as to where that is).