A new photo of the Wehrmacht´s Swedish general, Count/Lord Gilbert Hamilton, has surfaced:
This Teutonic portrait has been released into the public domain by Göran Mellblom via Wikipedia. There is at the time of writing no Wikipedia article in English about the general, but there is one in Swedish and one in French.
One can note that the uniform is a mixture of Swedish cloth and German metal - beyond the regulations of both the German and Swedish armies. Presumably, this was taken in Sweden some years after WWI, perhaps in Hamilton´s home?
For more details about Hamilton including a photo of him in his complete Wehrmacht general´s uniform, see Swedes at War.