Papua New Guinea #609 1984 Centenary of Proclamation Reg and Aniline Ink VFNH

Two VFNH pairs of the 45t Centenary of Proclamation Issue, with one pair having the inscription printed in regular non-aniline, non-fluorescent purple ink and the other having the inscription printed in a fluorescent aniline purple ink, that shows through on the back. The paper of both pairs is non fluorescent on the front and hibrite on the back under UV light. 2008 Scott #609, cat. $5.00 USD - $5.25 CDN.