Jan I may have said this in past posting but here goes again................
one of the big probs is IDing the time frames using existing photographs of 110G-2's and their codes.
I. gruppe started using M8+ colored numeral in February of 44 maybe earlier. II. gruppe started using the code plus colored number in December of 1943, cannot tell for III. gruppe as month of activity in the losses records does not give the appropriate codes for any A/C. So for the big op on 11 January it is anyone's guess, I am assuming that II. gruppe did not use the full code but a colored numeral, the numeral could also through photos be put on the nose below the camera. I see a yellow 12 on one bird cracked up the spinners are solid black as an example.