Hi all,
Langdon,
Thanks for posting the IWM print, it's a good one!
Just touching on the 425/17 damage and repair, it's at least one way to explain why we may have not had MvR scoring more in it, but I agree in that one plane may have been luckier than another. Who knows?
On the subject of crosses and type applied at the factory, I've never seen any deviation from a middle to late accepted 1917 aircraft to an early 1918 aircraft. There may be some little differences like the bottom of the rudder is painted streaky green, but that's it.
I think it is safe to assume 425/17 and 477/17 would have come with the "standard" early crosses.
Here are some images to illlustrate.

Dr.I 216/17

Dr.I 512/17

Dr.I 581/17
Photos via Imrie.
Best,
Dave W.