How to Identify the Production Date on Car Glass?

[SanCourtney]

Method to identify the production date on car glass: The number represents the production year of the glass, and the small black dots indicate the production month. If the black dots are in front of the number, subtract the number of dots from 7; if the black dots are behind the number, subtract the number of dots from 13. The result is the production month of the glass. Some glass may also have a few larger black dots after the production year and month, which are used to specify the week of the month. Generally, the glass used by original equipment manufacturers is supplied with zero inventory, meaning the glass is fully supplied by the glass manufacturer before the car rolls off the assembly line, so the production dates of the glass on the entire car are usually similar.