Morocco Agencies 1948 Spanish Currency 1p20c on 1s brown Olympic Games error SURCHARGE DOUBLE, SG181a.

A superb unmounted mint (hinged in margin only), with full original gum, left margin vertical pair showing sheet number '012386’.

A unique and spectacular positional multiple from the one sheet of 120 discovered.

Accompanied with a Royal Philatelic Society (RPS) certificate of authenticity (1985).

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