I initially thought this a fake, but at second glance it looks like it may be a good unmarked buntmetal badge by Gustav Brehmer but the pic's aren't as clear as I would like ( the obverse is too dark imo) to be 100% positive. Therefore wait out for other opinions.
'I do not think we can hope for any better thing now.
We shall stick it out to the end, but we are getting weaker of course, and the end cannot be far.
It seems a pity, but I do not think I can write more. R. SCOTT.
Last Entry - For God's sake look after our people.'
In memory of Capt. Robert Falcon Scott, Edward Wilson, Henry Bowers, Lawrence Oates and Edgar Evans. South Pole Expedition, 30th March 1912.
I agree with you Ned, I think this is a good buntmetal flak by GB.
All the best
looks ok to me too.