1916-23 opt KGV 2½d blue, setenant horiz pr, right stamp variety 'NAUP.U' instead of 'NAURU'. VFM, left marginal. SG 6/6a cat £478 as singles, while such setenant variety prs should be +50%, so £717. 2007 BPA photo cert. (P)

Estimate AU$500

1916-23 opt KGV 3d bluish-violet setenant horiz pr, right stamp variety 'NAUP.U' instead of 'NAURU'. VF fresh M, left marginal. SG 7/7a cat £477 as singles, while such setenant variety prs should be +50% so £716. 2007 BPA photo cert. (P)

Estimate AU$500

1916-23 opt KGV Seahorse 10/- indigo-blue Waterlow printing opt SPECIMEN. VF fresh MLH. SG 18s cat £1000 (normal cat £11,000) (P)

Estimate AU$1,000

1916 opt KGV 1d red right marginal blk of 12 (6x2) cancelled on day of issue with 'Pleasant Island SE 2 16 Nauru' cds, 3 comp pmks cancelling 3 blks of4, now separated into individual blks. Usual minor tropicalisation. Still a superb exhibition piece! SG 2 cat £168 as individual U stamps. Massive premium for first day of issue. We have not seen these stamps cancelled First day before. (12) (P)

Estimate AU$150