1/3 Black/ Farbton70 and White Spinner on 109s

[Modeldad]

Is there information on the origin of the 1/3 White spinner and when it became incorporated into factory production. Or is there a monograph on all Luftwaffe spinners on all aircraft types?

The earliest I can find a reference to it is in the Summer of 1940. Reasons given are simply tactical marking. According to Ken Merrick there was directive issued in 1941 regarding the marling of spinner to put the 1/3 white into practice. But I cannot locate it. The next item I have is the painting guide for the Bf 109 G in 1943 which clearly shows the spinner as 1/3 white.

http://village.photos/images/user/79...4459491200.jpg

http://village.photos/images/user/79...8fee10c595.jpg

http://village.photos/images/user/79...02dd85ef33.jpg