Not all guitars today have the same manufacturing date. It is an obvious fact, but I have to emphasize to ensure that you won't confuse one guitar model from the other. Guitar brands themselves even rank or categorize their units based on the date that they were manufactured or released in the market.
Of course, it is quite difficult to assume the year or era of production of an instrument. Without a specific guide or information, guessing is the only best thing that we can do. Fortunately, there's a way out of this dilemma, and that is through the use of guitar serial numbers.
If there's a need for you to research the manufacturing year of a certain guitar, such as Fender or Gibson, you need to look at their serial numbers. This is the only foolproof method that you can utilize to track down the specifics of your rig without missing any details at all.