Hi.
The markings were in my opinion 'Yellow 9 + -'.
The original loss record is as follows:
http://www.ahs.no/ref_db/lw_loss_pub...?lossid=107636
(from
Genst.Gen.Qu.6.Abt. Nr. 4120/42 g.Kdos.(IC), 10.06.1942, Lfd.Nr 19 as you can see)
and my guess is that the Namentliche Verlustemeldung will verify this.
So if you have a photograph of a Bf 109 F-4 with trop filter, yellow 9 code, white tailband and a dark horizontal bar, it is definitely LIKELY that you have the correct one.
However... there would probably have been more than one similarly marked aircraft in the theatre, and the only bulletproof 'evidence' would be the ability to read the aircraft WNr (if it was correctly recorded and reported that is!!!
)
Regards,
Andreas