British Levant 1916 "Salonica" 9d agate, type S1 overprint, block of four, SGS7.

A very fine and fresh mint block with large part original gum (the lower pair are unmounted mint).

A very rare multiple as there were only 360 of these stamps printed in total.

Accompanied with a 1971 Royal Philatelic Society (RPS) certificate of authenticity.

SG Catalogue Value: £1,600+.