Hello and I hope you don't mind me posting this badge here.
I have never seen any restrikes or copies of this badge, but thought I should get some opinion, but I think it is a good original example, and it appears to have some wear on the reverse.
I did some research and found out the following information.
New Zealand Pioneer Battalion Badge
In 1914 Two Maori Companies were formed, A Company from North Auckland, West Coast North Island and South Island; B Company from the Centre and East Coast of the North Island. They left New Zealand called the Maori Contingent, though their formal name was the New Zealand Native Contingent, in February 1915 and took part in the Gallipoli Campaign from July 1915.
After Gallipoli the Contingent was split up for a brief period with the men being posted to Territorial units but this was found to be unacceptable and the Unit was reformed as the New Zealand Pioneer Battalion on 20 February 1916 and served in France. Initially the New Zealand Pioneer Battalion had two Maori Companies but from September 1917 became an all-Maori unit and was renamed as the New Zealand (Maori) Pioneer Battalion. The battalion was finally disbanded in March 1919.
These changes were reflected in the regimental badges, and the example shown here is the New Zealand Pioneer Battalion badge as worn from February 1916 to September 1917. The original badge and the final badge both incorporated the motto Te Hoko Whitu a Tu (The twice seventy (140) warriors of Tumatauenga, God of War).
The New Zealand (Maori) Pioneer Battalion or Native Contingent and Pioneer Battalion was a battalion of the New Zealand Expeditionary Force that served during World War I. The battalion was first raised in 1915 and served at Gallipoli and the Western Front and largely served as pioneers. "Of these by the end of the war, 2227 Maori and 458 Pacific Islanders had served in what became known as the Maori Pioneer Battalion. Of these, 336 died on active service and 734 were wounded. Other Maori enlisted (and died) in other battalions as well."
Mine is the first type, worn from Feb 1916 to Sept 1917.
Regards and thanks,