PN ... what I said at Post #22, really, but without a pretty picture
HQ Military Air Traffic Operations (HQ MATO) also had a badge, but Google is preventing me from finding an example. It was used by several Area Radar Units until they acquired their own badges. Never had one for ATC as a Branch, though, or for individual Towers [being subordinate to the Station]. I always fancied being OC 3216 ATC Sqn [no, not THAT ATC].