Brand: SEIKOMATIC DIASHOCK
SM139 (04/03/19 1330)
Gender: Men's
Case no: 69xxxxx / 6206-8150
Function: Hour, min & sec hands with day & date
Caliber: 6206
Vibrations per hour: 18,000
Production year: Sep 1966's
Driving system: Automatic winding
Dial: Nice two tone gray & black color dial original
Dial no: JAPAN 6206-8170T AD
Crystal: Acrylic (Some fine hair scratches)
Case: Stainless steel (Fine scratches)
Dimensions of case: 35 x 42 mm (Excluding crown)
Case lug width: 18mm
Condition: Used, working, very fine in as found condition as you can see at the Picture
Service: -
Accuracy: Tested flat & it's within 60 sec. Please see the last pic
Quick set: Yes, Do not quick set the day or date within 10 to 4 o'clock
Pull out the crown to the first click to set date & pull out the crown to secound click to set time & turn it by 24 hour's to set day
Remarks: This watch are used in Japan