I have no time to arrange other scanned hi resolution material I have. Never mind, hope you know it is not easy to claim for sure subtype. By the way- have you try to contact magazine you have mentioned?
Other problem is the fact that parts are interchangeable and parts from older version could be fit into later (know samples of machines completed in UK and Soviet Union) and hardly to proof that similar action was not done within operational units as possible temporary action.
Keep on good work, I watch your subjects with pleasure
