Alan,
many thanks for your post. You may well be correct on the 3 lug varieties,though many origional Victorian issue badges have this feature & I've assumed that this may also have been carried through to some of the early KC badges as well ? I probably should not have refered to the 'West Riding' restrike as being a more 'normal' type of fixing there. My appologies. Generally I avoid them, the 2 lugs indeed being more correct,for the British versions, anyway, though I do have a couple, but they have had later replacement lugs affixed.
Also this feature regularly occurs on many WW1 & after ,Australian & NZ, etc. versions,at least. One that I have, has a nice & unusual 'J.R.Gaunt & Son Ltd London' plate also. ??
Will attempt to illustrate these more fully, at a future time.
Cheers !
Steve