...many digits are in the serial number), the way it works is subtract the first 2 numbers (23, in your case) from 100 for the last 2 digits of the year of manufacturer. Your example: 100-23=77 i.e. ...
Question about Optics
...need the serial number - but if you could give me the first 2 digits and the last - I should be able to peg which year. From there, valuing is a lot easier. All The Best - Justin M. 17 South ...
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