![]() In the new format, Apple uses 27 alphanumeric characters to denote the week of manufacture, starting with 1-9, then C through Y (omitting 0, vowels A, E, I, O, and U, as well as B, S, and Z). ![]() Week - In the old format, this was 01-53. For 2010, machines with "C" in this position have been manufactured in weeks 1-26, while machines with a "D" will have been manufactured in weeks 27-52 or 53. In the new format, Apple uses 20 letters, omitting vowels A, E, I, O, and U, as well as B. Year - In the old format, this was the last digit of the year. ![]() ![]() PP or PPP - Plant Code (Manufacturing Location) An 11-character format used up until 2010, and a 12-character format that is currently in use. ![]()
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