Hi again Maestro. As promised, here are some profiles on Galland's Bf109F's, together with one for Heinz 'Heino' Sachensberg's early 'G' model, which is outwardly similar to the 'F'. The latter profile is from the Microscale sheet #48-20, and I have the decals for the number, tail band and name for this, if they are of use to you.
The first profile of Galland's aircraft shows his Bf109F-6/U, based at Brest-Guipavas, in April 1941. This had the wing cannons fitted, and the telescope sight through the starboard side of the windscreen. The colour scheme is 74/75 over 76, with an 04 Yellow cowling and spinner, and it is probable that the rudder was also Yellow, and displayed 58 victory markings. The Werke Nummer is believed to have been W.Nr.5750. By late 1941, the yellow cowling colour had been removed, revealing the mottle camouflage beneath.
The second Galland machine is his modified Bf109F, designated as a Bf109F-2/U, and is shown as it looked whilst at Audembert, in December 1941. This is the one that had the 13mm machine guns fitted over the engine, with the breeches covered by small blisters, field-produced, which were much smaller than those fitted to the later 'G' model. The colour scheme is 74/75 over 76, with the fuselage sides having a light overspray of 02. The rudder was Yellow, with the Oak Leaves and '69', with 25 further victory markings below.
As far as I remember, the Airfix kit has the armoured windscreen on the canopy, and this would need to be trimmed/filed at the top, to represent the 'normal' screen. The Microscale sheets are no longer in production, but a search through other decal manufacturer's sites is sure to find suitable decals for any of Galland's aircraft, the main requirements being the 'Mickey Mouse' insignia, and the rudder markings; the 'Winkels' etc can be adapted from any suitable decal sheet.
Hope this helps.
Terry.