1969.
Mint Never Hinged.
Campbell Paterson: S126a-S127a.
Scott: 435-436.
NOTE: If bidding on multiple items within 7 days, PLEASE let me know as I can dispatch them all together at normally the cost of 1 item (depends on weight & size).
Stamps will be sealed against moisture and I will try not to use Peel & Stick stamps for postage.