Hermann Graf's Bf109G-6 (converted from a G-5) when he was commander of JG11, late '43-early '44. W.Nr. 15729.
Speculation is, that it was sprayed RLM76 over its original camo of RLM74,75. Fuselage markings also dusted with RLM76 to mute them.
This model is Revell's 1/32 Bf109G-6 early/late. Large fuselage and wing markings are paint, not decals..