NEW ZEALAND 1931, AIRMAIL - New Zealand: 1931 February 6-31, The Hawkes Bay Earthquake Emergency Flights, envelope addressed to Christchurch franked 1d tied by Hastings cds of February 6  alongside violet "EMERGENCY EARTHQUAKE AIR MAIL" and signed by the pilot 'C.M. Duthie',  fine (NZAMC 41a).