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Grand Seiko watch 5646-7010 Hi-Beat 1971

Grand Seiko watch 5646-7010 Hi-Beat 1971

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SPECIFICATION

Reference : Grand Seiko 5646-7010
Movement : 5646 HI-Beat
Age : October 1971
Case Size : 36mm
Case Thickness : 10mm
Lug to Lug : 41mm
Lugs : 18mm
Condition :
 Used Seiko watch
Box & Papers :
 No
Case Material :
 Stainless Steel
Warranty :
 12-Months Warranty

 POINTS TO MENTION

  • In fantastic pre-owned condition, with light wear from use 
  • Case and bezel have some light scratches
  • Small spot by 4 o'clock indices
  • Fully serviced Hi-Beat movement
  • GS signed crown
  • Paired with an unworn black leather strap
  • Gold medallion is in wonderful condition

A BIT OF TRIVIA

The last Grand Seiko

As the last of the Vintage Grand Seiko series, the range of the 56GS series is second only to the 61GS concerning the diversity of watches produced. Whilst utilizing only three different movements and no “special” or “VFA” examples in this series, 35 different models were produced from 1970 until 1974. One can find them in the catalogues 1971-1975.

The 56GS used the no-date 5641A, the 5645A date and the day-date 5646A, making this the only series with all three complications. To make all the variations, for the first time automation was introduced into the production line, and the beat of the movement was set to 28,800bph which had great impact and reliability increased. Some people even consider 28,800 bph to be the best rate for a watch movement with its balance of maintenance, reliability and precision. As these movements were a work horse for Seiko at this time, it is easier to get parts for the 56GS even now, 40 years after its production, making it the most serviceable of all the Grand Seiko models produced in the past. Of course, a somewhat less finely tuned calibre 56 movement was also used in the King Seiko 56 series and the Lord-Matics 5606.

While there is a large variety of case designs, unlike the 61GS series, there is consistency in design and associated numbering of the cases used across the different movements.

Adhering strongly to the “Grammar of Design” rules, the -7010 and -7011 watches are almost certainly the most solid vintage Grand Seiko's that you see on the market today. It is believed that the difference between the two cases is simply a move from marking the cases as being “waterproof”, to “water resistant”, but this remains to be confirmed. It is not consistent however with the 5646 models seen, where both -7010 and -7011 references are marked as being “Water Resistant”.

OUR THOUGHTS

The 56 Grand Seiko is must have for any collection its reliable, affordable and beautiful. The 56 movement is pretty much bullet proof and even at 50 plus years old is still more than capable of being an everyday wear. 

SKU:GS102WO

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