Art, I guess that although the scheme makes sense from a "technically possible" POV, there's just no real evidence for it. MvR got victory 63 on 11/30/1917, flying Alb D.V 4693/17. Then he's mostly gone for the next three months, to Russia, Adlershof and home to Schweidnitz. He doesn't get victory 64 until 03/12/1918, and he gets it in Dr.I 152/17. His next victories are as follows:
65 - 03/13/1918 - Dr.I 152.17
66 - 03/18/1918 - Dr.I 152/17
67 - 03/24/1918 - Dr.I 477/17
68 - 03/25/1918 - Dr.I 477/17
69 - 03/26/1918 - Dr.I 477/17
70 - 03/26/1918 - Dr.I 477/17
71 - 03/27/1918 - Dr.I 127/17
72 - 03/27/1918 - Dr.I 477/17
73 - 03/27/1918 - Dr.I 477/17
74 - 03/28/1918 - Dr.I 127/17
75 - 04/02/1918 - Dr.I 477/17
76 - 04/06/1918 - Dr.I 127/17
77 - 04/07/1918 - Dr.I 477/17
78 - 04/07/1918 - Dr.I 477/17
79 - 04/20/1918 - Dr.I 425/17
80 - 04/20/1918 - Dr.I 425/17
All victory data from
Under The Guns of the Red Baron, Franks, Giblin and McCrery.
As you can see, he only gained two victories, his last two, in 425/17. Circumstantially, this points to 425/17 being a new (or relatively new) replacement for 477/17. But Paul Leaman states that MvR test-flew 425/17 on 01/08/1918 (in his book
Fokker Dr.I Triplane, A World War One Legend). According to Peter Kilduff (in
Richthofen, Beyond the Legend of the Red Baron), MvR left the Peace Conference at Brest-Litovsk sometime after 01/05/1918 and was ordered back to Germany on a morale-building tour. He certainly could have been around to test fly 425/17 on 01/08/1918 if it was still at the Fokker factory.
So 425/17 must have existed in January, 1918, but it appears to still be in Fokker's inventory. Perhaps after test flying it, Fokker made arrangements to have it painted at the factory in MvR's red scheme. Or maybe it already was in red and MvR arrived to test "his" plane, already prepped by Fokker especially for him. But there's no way to know if it had the older-style white square field-and-cross markings, or just white-outlined Eisenkreuse.
None of the reference material I have shows any picture, text reference, or profile illustration of the white-square markings on 425/17. I think most creditable researchers would be unwilling to go out on such a speculative limb -- there's just no evidence for these markings on MvR's all-red Dr.I. My guess is that a lot of artists and model kit makers are unaware that MvR flew at least three different Dr.Is within a few months time period, and they conflate the various marking and coloring schemes.
You can certainly keep your first scheme for the flight sim skins, but just know that it's purely speculative. In fact, as Dan pointed out above, there's no evidence at all that MvR flew 425/17 operationally before 04/20/1918 -- and plenty of circumstantial evidence indicating he didn't. Most of his triplane victories were in 477/17; this plane is far more representative of this period in his career. And 477/17 is not an all-red Dr.I; parts of it are Fokker streaky-camo'd. All-red 425/17 happens to be famous simply because he met his end in it.
BTW, very nice work -- the skins look good. What sim do you fly them in?