A limited edition 1 oz silver proof coin with gold plating will also be released. It features a coronet design assigned to the Prince and weaves in a koru - the M?ori symbol for new life.
"Prince George's birth was a global event and there was huge excitement in New Zealand about his arrival, so it's only fitting he gets his own stamp," says New Zealand Post spokesman, Simon Allison.
"The minute news of the Prince's birth came through, we put into action a plan we'd had in place and worked around the clock to get our commemorative stamp and coin issue finalised," he said.
That process included getting approval for the images and designs from the Queen and Prince George's parents, the Duke and Duchess of Cambridge.
"The Queen and the Duke and Duchess have personally okayed the images and we're glad they agree with our choice of stunning photos which show an immensely proud Royal mum and dad and the baby Prince," said Allison.
Pre-orders for the stamps are available now. First day covers and presentation packs will be sold at outlets from September 11.
Check out the photographs taken that day in the gallery below:
- www.nzherald.co.nz