Complete guide to vintage Grand Seiko watches
The history of Grand Seiko begins in 1960 with the introduction of the Grand Seiko Chronometer, better known today as Grand Seiko First. Between 1960 and the first half of the 1970s, numerous models were produced, which can be divided into seven different families, based on the movements. There are seven families, and not eight as we often hear, because the caliber 3180 (renamed 5720) and the 430 (renamed 5722) …