Black AA RTR beret badge

[Chacal]

Evening chaps

I picked up an auction lot earlier which contained a mix of mostly modern British Army insignia (I now have enough miniatures of the ‘Afghanistan’ medal to deck myself out like a Third-world general if the fancy takes me). One of the badges is a QC Royal Tank Regiment beret badge which appears to have beeen manufactured with a black anodised finish (rather than painted by the owner), is this a particularly rare item? I had a trawl through past threads but it is entirely possible I missed any reference to it. Any thought or comments are, as always, greatly appreciated.

Thanks

Graham