[Doug Stankey]

Thanks for the obscure image!

The A/c with "B14" code is from 4.(F)/Aufkl.Gr. 18. There is another example of this code (80+F14) on page 71 of Aufklärer und Aufklärungsverbände der deutschen Luftwaffe 1935-1945 by Wadman et al.
On the other hand, the one "B3K" code is a bit tougher since the "K" means that it is from the post strike recon flight of the staff flight of the third gruppe of a bomber unit. Therefore I expect that it does NOT have "80" as the first part of the code.

This is all part of the fun of prewar codes!

Doug