The 56GS series was introduced in 1970 and offered a wide variety of models with 35 in total. This reference was also the first to introduce an ultra-thin automatic caliber, at just 4.5mm. Following the Grammar of Design rules, the -7010 and -7011 cases come with sharp edges and brushed finish to the surfaces between the lugs and are the most common vintage Grand Seiko that you can find on the market.
This example we have to offer is the Grand Seiko 56GS Ref.5646-7010, blue dial, in stainless steel: The blue dial variant is very rare as it was sold for a short period, and it comes with its correct GS buckle.
Shipped from Tokyo, Japan
SOLD - Grand Seiko 5646-7010 Blue Dial
This Grand Seiko is in excellent condition. It is unused as it was originally kept in a collection. The watch has some light scratches due to storage and retains sharp edges with a beautiful Tanaka grammar of design profile.
The original blue dial is very clean. The handset and crown are all original and in pristine condition. The original case back and gold medallion is in great condition and the blue protective film is still intact.
There are no visible scratches on the glass.
BRAND: Grand Seiko
DIAL: Original blue dial
CASE MATERIAL: Stainless Steel
CASE DIMENSIONS: 36.0 x 41.0 mm diameter; 10.2mm thickness, 18mm lug width.
CRYSTAL: Mineral Crystal
CASE BACK: Screw-in Stainless Steel
MOVEMENT: 5646A Automatic
Manufacturing date: January 1973
Service History: Unknown, -12s/day
Bracelet/Strap: Black Japanese cowhide leather strap from Accurate form with the correct GS buckle.