Seychelles 1952 15c deep yellow-green error, SG161/a Autographs & Signatures which led to the introduction

which led to the introduction of sterilisation and hand washing in hospitals

Black and brown trials with clear British Philatelic Association certificate of authenticity (1964)

New Zealand Campbell Paterson catalogue value is $1

and other-worldly vibe

Accompanied with a British Philatelic Association (BPA) certificate of authenticity (1999) for pair of which this is the left-hand stamp

Seychelles 1952 15c deep yellow-green error, SG161/a Autographs & Signatures which led to the introductionSeychelles 1952 15c deep yellow green 'Fishing Pirogue' error, SG161 a. A fresh unmounted mint block of 15 (5x3) with full original gum, being the top three rows of a sheet with full margins, showing watermark error w9a 'CROWN MISSING' on R2 3 (the centre stamp). A rarity in this fully positional form. The Stanley Gibbons catalogue value is 900+. This was the first King George VI set issued by the Seychelles and deviated from the tradition of previous