DFS 228 and Dornier 217 information request.

[TonyTiger66]

Hi folks; a quick request. I have the Huma DFS 228 and an Italeri Dornier 217. I would love to make the composite pictured here:

http://www.aviastar.org/air/germany/dfs-228.php

and here:
http://www.walterwerke.co.uk/walter/dfs228.htm

Although it is clear in all photographs that the Dornier 217 is marked 'K-3', on at least one photograph it is clear the aircraft has further identification/matriculation markings.

Could anyone help with advice on the codes the Dornier carried?

I have searched extensively, to the point of finding a profile with no matriculation details

This combination seems to have been captured by the US, then UK, at the end of WWII, so there may be a chance further info for 'k-3' exists.

Thanks for reading,

Happy modelling
Tony