I know you guys will know this but If you go to www.wwiidaybyday.com follow the links (unit emblems-tactical markings, license plates) then (unit emblems on aircrafts)you will find under (eagles, birds, dragons, roosters, chicken etc..) 4.(H)/21 Then look under (beasts of prey, dogs, cats) KG 55 you will see subtle differences in styles, the tail on KG 55 snakes up behind the Griffon where as the tail of the Dragon of 4.(H)/21 snakes between the legs as in this badges example. Also the wings on KG 55 are black as is the tail tip. I feel this is 4.(H)/21 but that is just my interpretation. I know Francois is ofay with these badge types maybe he can cast more light? Sorry I am unable to post individual links from this site.