NOS Grand Seiko 56GS 5646-7011

Introduction:

56GS was the last generation of vintage Grand Seiko. Right after Seiko issued the 61GS, there was a need to build the ultimate daily watch that could be used for decades, so there were some majors changes. In order to improve robustness and stability, the frequency of the movement was adjusted to 28800bph from 61GS's 36000bph. The movement was also redesigned to be thin and compact, making 56GS the slimmest automatic Grand Seiko at that time. It is in incredible NOS (New Old Stock) condition and it has unbelievably remained its purest form for almost 50 years. 

Year: Feb 1974

Diameter (excluding the crown): 36mm 

Caliber: Original Cal.5646A automatic movement

Strap/Buckle:  Aftermarket strap and original GS buckle

Accessories: Original inner/outer boxes, certificate and original Seiko strap

Condition: NOS (New Old Stock)

Service History: Unknown