Rev. Cann. JD Andrews, Christchurch, forwarded to Tain Ross-shire Scotland

Here is a cover with something that I don't see very often. Stamps from two different countries both postally cancelled for their individual countries. It is also interesting that it is an airmail letter coming from the Woodbourne Air Force base in the Blenheim postal district, to Christchurch which is not that far away both in the South Island of New Zealand. It is then forwarded on to Tain, Ross-shire, Scotland.