Achat 8188 COUSSIN LONGINES VINTAGE EN FORME D'ARGENT 925, RARES SECONDES CENTRALES, VERS 1920

DIAL:original white color enamel (porcelain) dial, signed LONGINES at six, SWISS MADE at bottom. Black color arabig numbers excepting the 12 number, which isREDcolor. Original black color Breguet style hands. Dial is in excellent conditions, no dings, cracks or hairlines (see pictures, please).
CASE:original STERLING SILVER 925 case, CUSHION shaped, with snap back cover, which is signed SWISS, and ishallmarked & numbered (identical number than its movement) by LONGINES. Please refer to the pictures
MOVEMENT:original mechanical with manual winding movement, highest quality caliber LONGINES 12.91,CENTRAL SECONDS FEATURE,very rare on these veteran watches, which almost always had auxiliar seconds at six. Central seconds were used mainly by professionals in need to calculate short periods of time, especially doctors, who need to clearly see the seconds hand for measuring (for instance) pulsations. Movement is signed and numbered5264313 by LONGINES WATCH Co.
WORKING ORDER:yes, it is in running order (not checked for accuracy)
MEASURES:32.5mm wide (including its winding crown), 35mm lug to lug.
BRACELET/STRAP:vintage black color leather strap (for fixed springs) with silvertone buckle (see pics, please).
ESTIMATED AGE:circa 1920
GENERAL CONDITION:very good+ general condition, please refer to the pictures.