Hello again David,
Just to follow up my earlier comments, I have two badges in my small Worcestershire collection that I'm sure are copies......I may have others elsewhere but this post is to highlight these.
The brass Volunteers, should, according to K.& K. be bronze and the white metal Volunteers shouldn't have the extra scroll under the title scroll.
Both badges are, I think, as rare as ' rocking horse doo doo ' to coin a phrase, because of this fact, I am more than happy to include these two in my collection but if anyone wants to help me replace them with the the real deal, please don't hesitate to contact me, lol.
Dave.