Diagonal red SPECIMEN ovpt front/back; horizontal red # ovpt lower left front; all-zero s/n 500 francs
Details
Obverse: French text; man with pick ax and two men with pans looking for diamonds in stream; bank monogram; 5-pointed star in diamond as registration device; three diamonds
Reverse: French text; 5-pointed star in diamond; diamond mining in narrow valley; trees; river; building