This set of four stamps and the first day cover was issued on 13 June. A big thank you to Jaap for the images.
Harrison Point L/H | 13 Jun 2013
South Point L/H | 13 Jun 2013 | J5806
Needham's Point L/H | 13 Jun 2013
East Point L/H | 13 Jun 2013 | J5804