Wondering if this Guards badge is genuine

[briansbadges]

I'd appreciate feedback on some badges in my late father's badge collection. I gather the Guards machine gun regt badges are sought after (if genuine!)

I'll attach the photos I've taken (front and back) of the Guards machine Gun regt badge I have on this post and the other machine gun badges I'm not sure about on another post.

Thanks, as always, for imparting your knowledge

[billy]

Looks fine but perhaps a collar, could you give sizes or post alongside a £ coin (any coin for that matter!)

[briansbadges]

Thanks, Billy.
I've taken another couple - hope they help!