Had a quick look around and the only thing I found was a record on the Australian National Archives regarding his arrival in Australia.
Item details for: B78, DUTCH/DE KRYGER JAN IGE
DE KRYGER Jan Ige - Nationality: Dutch - Arrived Sydney per Almkerk 20 Nov 54 Also known as DE KRIJGER
Contents date range
01 Jan 1939 - 31 Dec 1972
Click to see which government agency or person created this item.
DUTCH/DE KRYGER JAN IGE
Date of decision
03 Jul 2009
PAPER FILES AND DOCUMENTS (allocated at series level)
Records authority class number
15 Jun 2009
The problem with finding his birth certificate (with his parents on it) is that Dutch law does not allow birth certificates to be made publicly available for 100 years from the birth year so in your case, they won't be public till 2028.