How to Find a Seiko Model Number By. Deciphering the Seiko serial number and understanding the bits and pieces that make it up takes a little detective work on. How to Find a Seiko Model Number By. Deciphering the Seiko serial number and understanding the bits and pieces that make it up takes a little detective work on. All modern Seiko watches have the date of manufacture contained in the 6 digit Serial number. Exceptions are pre-1970 models when the numbers were 7 digits long, and limited edition models may have a number reflecting it's piece number e.g. 90/200 meaning its the 90th of only 200 pieces. Feb 27, 2015 All Seiko's should have a Serial number on the case back. The first number in the Serial is the last number in the year of production, and so if it is a new watch and you see an 8 it should be the year 2008. The second number in the Serial is the month the watch was made if you see a 4 it will be the month of April. Carte A Calatoria Crestinului.

Understanding Seiko Serial Numbers How do you find out how old a seiko is by serial numbers? The serial number indicates the last digit of the year and month made in the formay YMxxxx(x) where months go 1-9,O,N,D so a 8N1234 would be Nov. To narrow down the decade you might judge by the case number.

Sadhu Singh Strength Of Materials Pdf on this page. One tip for guessing decade is if the serial is 7 digit, it was probably made '67 or earlier whereas 6 digits would be '68 or later. (late '67 / early '68 transition to 6 digit serial numbers).