Just looking at the reverse, the molded in hinge and catch, the hinge rivet, the pin, the tool marks on the pin, the pin itself and the slight "sunburst" appearance of the zinc all indicate you are correct. The obverse design is also correct for S&L.
'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.
its a v/nice one.