Thanks a lot to both! Even if it's a XIII, I guess that it's a good reference for VIIs too.
The confusion was pretty usual. During WWI I think that often the Italian army referred to SPADs using the amount of square meters of the wing, or sometime the HPs of the engine... So it's a common difficulty.
I guess nobody knows for sure if 4457, 4466 and 4468 were VII or XIII anyway. Stavropoulos' 4466 is referred here as a VII:
Greco-Turkish War
It would be interesting to know which unit Sgt Christoforos Stavropoulos belonged to, and how to write "Sergeant" and "Ελληνικός Στρατός" in Greek but with Latin letters (I know it's a silly question, but this is the way the game works). I think I should ask under "People".
Thanks again to both of you!
Andrea