Here is a photo of the emblem on page 169 of the source quoted, quickly taken with my iPhone:
http://i589.photobucket.com/albums/s...B/77ff13fd.jpg
Source: "Die Flugzeugefuhrer-Ausbildung der Deutchen Luftwaffe 1935-45 - Band I" by Carlsen & Meyer [VDM, 1998]
Note that this appears to be slightly different than the versions applied to the Bu131 in the eBay link and the Bi181's in the book... but you get a good idea nonetheless...
Cheers
Pete