Possibly a US Hawley manufactured helmet (4 folds to false puggaree and central vent for badge that is common to this make)that has been used by a member of the Royal new Zealand Air Force in the Pacific.
Named to Corporal D Fenwick, RNZAF. Espirto Santo (Vanuatu).
NZ402723 Desmond John Bruce FENWICK
Born 14 August 1914. When he enlisted 23 August 1940 his occupation was listed as automotive electrician. His trade in the RNZAF was Flight Mechanic and he was promoted to corporal before leaving NZ on 2 February 1943. Served with 3 Squadron, 9 Squadron and 12 Bomber Maintenance Unit all units were based on Espiritu Santo (Vanuatu) when he was posted to them. Was overseas from 2 February 1943 to 3 October 1943 (244 days). Returned to NZ as was suffering from severe headaches, dizziness and lethargy was medically boarded and result was that he could serve only in NZ. This was put down to the result of having received a broken nose when a child. Was finally discharged from RNZAF 9 October 1944. Interestingly on a conduct sheet in his service file it is recorded that in October 1941 he received a punishment of 10 days confined to camp because he had fitted a dirty spark plug to Harvard 964. On 18 August 1942 Harvard 964 left from Woodbourne on aerobatic training the plane and pilot were never seen again. it is believed to have crashed in the Mount Richmond or Molesworth area. There is a few web pages with interesting info on the search for this lost aircraft. For his service he is eligible for the Defence Medal, War Medal 1939-45 and NZ War Service Medal. Medals remain un-claimed.