I think this is WW1 rather than WW2 but happy to be corrected. Not sure whether the badge is NZ Expedition Forces or NZ Engineers.
Very nice old war souvenir measuring 2 1/4" x 1 1/2".
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At Molloy's MEGA ANTIQUES CENTRE, Takapuna, Auckland, New Zealand
Specialists in Pacific Islands Items, Victoriana, And a Fascinating Range of General Collectibles