[GriffMJ]

....further :-

Years ago I spotted this late Cold War Gaunt Motto that looks tantalisingly like a white metal with a short brass slider? The slider does look brass magnified in Photoshop ..... but .... this could be a dirty chrome? I never saw the back image of this motto but I suspect it is the late type as above.

So what I am saying is .... there could be a short slider version of the above (possibly marked "J.R.GAUNT B'HAM").

** If you have one (white metal with a short brass slider) ... marked or unmarked.... I would love to see a "front and back" image of it.