Further to Alan Grey’s excellent article on the Sir Robert Bear covers – PNG Calling, July – pp4/5 – here’s some additional information I came across (quite by accident – amazing what you find when tidying up a cupboard!). Hopefully the attached scans from the ‘NSW Philatelist’ of May 1995 are accessible. There is more information on that cover plus some very interesting comments related to another Tamata cover of the same date.
As often the case with postal history, as often more questions than answers!