Just won this 2009 PNC in a New Zealand Auction (Trade Me).......
Here is the description from Trade Me:
On 1st Sept 1969 Nuphil Associates Ltd of Christchurch produced their noted Yarralumla PNC containing the 1969 Australian 12-sided 50c coin.
Specimens of this 1969 cover regularly reach prices of $A800 to $A900 whenever they appear in auctions. Very recently one of these PNCs was sold on Trade Me for $A1675.
To mark the 40th Anniversary of the release of the Yarralumla PNC Pa-iNC
Covers of Sydney, who specialize in PNC, have issued the cover offered here in a Limited Edition of 100 only.
By a very lucky coincidence the 2009 Australian 50c coin (chosen for this PNC) commemorates the 40th Anniversary of the Landing on the Moon, and as will be seen from the scans, great care has been taken by the designers to incorporate, in their cover, the design of the original Yarralumla PNC. In addition Yarralumla, ACT, was again used as the Post Office for stamping and stamps showing 2 Australian Flowers were affixed. As the cover shown in the scan has been sold another (#092) is offered here.
Hope this one increases in value like the original Yarralumla PNC.