Brand: SEIKOMATIC BLUE YACHT DIASHOCK
SM180 (13/11/22 2130)
Case no: 13xxxxx / J13034 MA
Function: Hour, min & sec hands
Caliber: 603
Vibrations per hour: 18,000
Production year: Mar 1961's
Driving system: Automatic winding
Dial: Nice silver color pattern dial original (Some very fine scratches)
Dial no: JAPAN MADE MAJ13H207
Crystal: Acrylic (Some fine hair scratches)
Case: Stainless steel (Fine scratches & very small dent)
Case back: Stainless steel (Fine scratches)
Dimensions of case: 36 x 42.5 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
Power reserve: Fully wind or charged will last up to 35 to 40 hour's depend on movement
Accuracy: Tested flat & it's within 60 sec. Please see the last pic
Quick set: Yes, Do not quick set the date with 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 (Set the time to 5.30 or 6.30 than quick set the day or date will be better)
Remarks: This watch are used in Japan