1887 SG209 9d PURPLE & BLUE FULL PANE OF 20 MINT MARGINAL SETTING 3 ON RIBBED PAPER. A post office fresh full pane of 20. The stamps appear to all be unmounted mint, however, unusually. There are signs of an offset from the 10d purple & carmine. Where and when this originated is unknown. We do our very best to describe any faults that cannot be seen in the image of the item/items as accurately as possible. SG Catalogue value is for reference purposes only. Member of the Great Britain Philatelic Society.