Grand Seiko 1966 Ref 5722 9990 Stainless St Investment Grade Men's Watch rolex watch 1140 is often called a

1140 is often called a "piiggy back" mechanism because it used the the thin time-only ETA 2890-2 movement with a chronograph module

It is original and will become a perfect collectible treasure

Beautiful Original Silver Omega Dial

This watch has been cleaned serviced toiled calibrated and timed

Grand Seiko 1966 Ref 5722 9990 Stainless St Investment Grade Men's Watch rolex watch 1140 is often called aHi Beat Diashock VERY RARE GRAND SEIKOCHRONOMETERMade in JapanThis is a rare 35 Jewels variation of the 5722A with date function : the 5722 9990 , a special 37mm edition released in 1965 1967. This is a very interesting reference with a special Lion caseback made by Seiko watch company specially for this model, a 5722A movement, the early dial with rare font for the Grand Seiko text at 6 and tan original crown. A rare Grand Seiko, perfect for the