Correct for the general views, Franck:
http://www.ebay.de/itm/KA46-Me-109-J...item338e0d5199
There are two locations written in Sütterlin on the bcd of those two pics. Can't read them though... Seems again to be 1./NAGr. 2 with a mix of Bf 109 G-4's and G-6's, as the unit operated them in 1943.
A fascinating set for sure... But I didn't find "Schwarze 2"
Marc