Brand: SEIKOMATIC DIASHOCK
SM172 (10/10/21 2130)
Gender: Men's
Case no: 56xxxxx / 6206-8010
Function: Hour, min & sec hands with day & date
Caliber: 6206
Vibrations per hour: 18,000
Production year: June 1965's
Driving system: Automatic winding
Dial: Nice silver color dial original (Dial turn color)
Dial no: JAPAN 6206-8010TAD
Crystal: Acrylic (Some fine hair scratches)
Bezel: A small dent on the outer ring
Case: Stainless steel (Fine scratches)
Case back: Stainless steel (Fine scratches)
Dimensions of case: 35 x 39 mm (Excluding crown)
Case lug width: 18mm
Condition: Used, Working, Very fine in as found condition as you can see at the Picture
Service: Yes
Accuracy: Tested flat & it's within 60 sec. Please see the last pic
Quick set: Yes, DO NOT QUICK SET THE DAY & 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 or turn it by 24 hour's to set day (Set the time to 5.30 or 6.30 than quick set will be better)
Remarks: This watch are used in Japan