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The enlarged pic of the T6+AN reveals something that may look like the "B" letter. So..it might have been the remnant of the the manufacturer's code too. However it could be the shadow of the bomb rack mounted close there as well. But it is too regular in the shape to be the shadow , IMHO.
...I wonder what the evidence for the Italian colour is? It must be possible, but is there any real proof, or is this supposition? Generally I would expect the Luftwaffe personnel to use paints with which they were familiar, assuming they were available.
Cheers
Steve
So if it were an RLM color which sand color would it be?