Quite probably all the work of Alf Batt.
On some of his earlier pieces he painted a little black “x” on the back somewhere. Other pieces are give-aways because of the paint which has run through tears in the metal, rivet holes etc. Mostly, if one compares the guage of the metal, the reverse and the panel lines it is easy to spot that the piece in question did not come from (a) either that type of aircraft or (b) the section of airframe where, for example, a unit badge or swastika might have been painted. Always, the paint is acrylic (often gloss) and not organic period paint.
In the case of the badge that forms the main topic of this thread, the unit is incorrect as has been pointed out. Not only that but the badge is hugely oversized and the panel lines/rivets etc are all wrong for where this was placed on the 109.
Alf Batt was not the only forger of these items, and we do know of others who have produced similar ‘artwork’ – including the piece of Do17 that became a Me109 relic….although I don’t think we can talk about that. I can feel another ban coming on if I go further!