Your special Thai numeral, Seiko 5 would be more likely from September and notbecause the caliber was discontinued by and was replaced by the current 7s26 caliber. After your last advice I internetted Orient automatics and you are of course right, they are a great idea. The Model on back is and on the face is AD. Comment by berry on June 26, Your education, and that of one or two others, has shown me the absolute need to shop around for watches, especially via mail order. Comment by Quartzimodo Admin on March 1, 3:
Seikos with solid casebacks plastic, stainless steel or titanium will have the 6-digit serial number etched in a straight line.
Seiko Date Finder
Comment by Quartzimodo Admin on March 21, 9: Comment by Quartzimodo Admin on March 7, 5: I prefer the look of the latter and the specs seem very similar. There are however exceptions to this rule. Some very recent model Seiko 5s have the serial number printed not on the glass but along the caseback rim.