How to Find a Macbook's Manufacture Date (4 Steps)

Click on the 'Apple' icon located on the desktop, in the upper left hand corner of your MacBook's Finder window.
Scroll down to 'About This Mac,' then click on the 'More Info' button at the bottom of the window.
Note the 'Hardware Overview' pane on the right side of the window. Locate the 'Serial Number (system):' toward the bottom of the list. Locate the serial number for your Macbook in the 'Hardware Overview' window that opens. The serial number is composed of characters and letters, and contains the manufacture date.
Note that the first two characters in the serial number signify the location where your computer was manufactured. Examine the third character in the string, which is a single digit. This is the year your MacBook was manufactured. For instance, if the numeral is '8,' your computer was made in 2008; the numeral '0' would signify that the manufacture date is 2010, since the MacBook was not released in the year 2000. Now look at the fourth and fifth characters which signify the week that the MacBook was manufactured. The digits '12' for instance, would mean that the notebook was made in the 12th week of the year, which is the third week in March.
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How to Determine MacBook Build Date

Open the 'Apple' menu and select “About This Mac.” Click on the “More Info…” button.
Locate the serial number for your Macbook in the 'Hardware Overview' window that opens. The serial will be 11 characters long and contain a mix of letters and numerals.
Use the serial number to determine the build date. The first two characters are a code that indicates the factory where the computer was made. The third character is the build date year. It is only a single digit. The number five, for example, would indicate a build date year of 2005 unless the computer is obviously very old, in which case it would indicate 1995. The fourth and fifth characters in the serial number indicate the build date week of the computer. The number 49 would indicate that the computer was manufactured in the second week of December.
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