[Rémi Baudru]

Thanks you for your answer.
To my knowledge, it is in "Yugoslav Gustavs", an article written by Drags Brasnovic and published in 1982 in "Scale Models" (Warplane special) that was the first (?) color profile of the G-14 coded black "5" with the number "2105" on the fuselage (in fact the last four numbers of the Werknummer).
The author of this nice profile was Danijel Frka.
This article was also illustrated by the same photo you have described (a front view of a 109 with three guys under the propeller).
The author gave an other interesting information : the second 109 was 2103.
So without any photo, this profile is probably only a pure invention.
Regards.
RB