Thanks for the info, Pete.Clearly, Roden was aiming for doing multiple versions of the SPAD when the tooling was created and one just has to do their own research.I have seen pictures of the later SPADs with the photo panel on the side and a panel on the bottom with a hole for the camera lense, but Roden didn't do the bottom panel. Seems a bit strange.
Well, one restoration site labels this tank as an oil tank. Kellner built SPAD.