3478 1940 Official opts on Centennial ½d, 1d, 2d, 2½d, 3d & 6d values, all prs, one ea with variety "ff joined". VFU with "Wellington Registered 4 NO 40" cds. Scarce variety (only once ea sheet), extremely rare genuine U se-tenant prs. SG O141-2/a, 144-6/a & 148/a, cat £370+++ as singles & se-tenant prs have to have 100% premium at least. Key 6d with 2005Ceremuga photo-cert. (12) (P) $300 $500