Bf 110 C of 7/ZG26, Fw Helmut Neitzki, Trapani-Milo, early 1942.
 Nice and unusual paint scheme ( with little circular spots ), wich suggest a transfer flight to North-Afrika.
 [falkeeins.blogspot]

taken from fb/Saro Finnochiaro

Bf 110 

The true origin of the "shark's teeth" on WWII fighter aircraft...

Not the P-40s of North Africa. Not the P-40's of the Flying Tigers in China.
 The original --- German Bf 110 fighter aircraft of squadron ZG 76
Infact,shark teeth appeared even earlier,in WW1 with the German flyers,  see photo of Roland CII

http://www.wwiaviation.com/drawings/LFG-Roland-CII-Shark-Mouth-Pilot-Unit-Unknown-sn-2-600px.png

taken from fb/Kyle Carpenter


Shark teeth

A German Ju-87,unit and number unknown,crashed on the beach,Dunkerque 1940
taken from fb/Marc-André Haldimann