Done a bit more digging and come up with a couple of things. First, the colour pic shows a version of the England Blitz shield, in this case on the nose of the JU88R-1 at the RAF Museum, Hendon. This A/C, WkNr 360043 arrived at Dyce (Aberdeen, Scotland) on 9th May 1943, flown by Oblt. Schmidt of 11/NJG3. The defection had been arranged via British Intelligence, and the aircraft revealed many of the secrets of the Lichtenstein radar equipment etc. Somewhere (!) I've got more pics of this A/C, including some of my own, and the story behind this flight, and a similar, but unintentional landing of another NJG JU88 in Britain.
A bit more on the Abschuss zeichen; the diagonal black bar within the vertical white bar signified a night victory. As Erich pointed out, the variations in style etc were down to the pilot/ground crew, and some showed silhouettes of the aircraft downed, eg. 2 engines, 4 engines. However, if the victory was over a Mosquito, this was considered an achievement, and the white bar would include the title 'Mosquito'.
The second pic shows some variations on the fins/rudders of Bf110's. The pic lower right is of the fin of Maj. Wolfgang Schnaufer's Bf110G-4, preserved in the Imperial War Museum, London.
The third set of pics is interesting, as it shows the same machine depicted in the wartime magazine-cover photo posted by Erich. These pics show Oblt. Leopold Fellerer (big bloke!), Kommandeur of II/NJG5, on 14th January 1944, with the score on his Bf110G at 22 victories. Could it be, Erich, that the aircraft was used by more than two people/units? The reason I ask is, that the final pic shows Leutnant Kraft in front of his Bf109G-10 of 7/JG300.
Perhaps the Propaganda unit used the tail of the '110 as Kraft's '109? This is only a suggestion as, I am sure you are aware, quite a few similar anomalies occured with the press/service publications of the time, when captions of photos described a particular event/action etc, but the photo showed something totally different. For instance, a fairly well know pic, published in a German paper during the war, purporting to show (German) troops examining the downed wreck of a British bomber, when the aircraft was a JU88 of 'Totenkopf'!
It will be interesting to establish what's what, as the credentials of the authors of the book these pics came from, and their sources, appear to be sound. Consultants, who also provided some of the photos, included Jabs, Falk, Drewes and Nacke.
Anyway, whatever the outcome, I hope these pics prove useful Jan !