![]() (The letters 'O' and 'I' were not used, presumably to avoid confusion with the numbers zero and one.) If we assume Apple began each week at 000, this identifier becomes an ordinal indicating the model's production order that week. The next three characters are a three-digit base-34 unique identifier. In our example, we see that the Mac with serial number F4 41 2SAM0001 was made in the 41st week of the year. The next two digits indicate the week of the year of production. In 19, a number of Macs were made at Fremont with "F1" or "F3" as the factory designator, and modern build-to-order Macs may have a number preceding the letter in the factory code. Referring back to our example again, we see that the Mac with serial number F 4 412SAM0001 was made in 198 4. In all cases prior to the Mac Plus, this will be in the 1980s. The first numerical character* indicates the last digit of the year of production. In our example serial number, F 4412SAM0001, we see that the Mac in question was made in Fremont, California. The prefix consists of one or two letters (and/or numbers) designating a factory code: The methodology behind this decoder is reasonably simple. WARNING: Geek alert! If you don't like math, you can skip this section. Still working on a good means to tie year codes to model number so G5s and the like aren't given "made in 1984" designations.Right now, some serial numbers for Macs made in the early and mid 1990s starting with "Fd" (d is a digit) aren't properly recognised. Still working on a good means to differentiate between two-character and single-character factory codes for Fremont, CA.I WILL report you, and you WON'T like the results. Don't believe me? Have a gander at these. Those of you attempting to use this decoder to pirate software are having your IP addresses logged, and they will be reported to your ISP. Does not work to magically reveal working serial numbers for software you've pirated.Power Macintosh G3 (Blue and White, 400 MHz).Power Macintosh G3 (Blue and White, 350 MHz, CD-ROM).Power Macintosh G3 (Blue and White, 350 MHz, DVD-ROM).PowerBook G3 (Bronze Keyboard, 400 MHz).PowerBook G3 (Bronze Keyboard, 333 MHz).Macintosh Portable (Original and Backlit).Macintosh Plus, ED, and European variants.Macintosh 512, 512e, and European variants.Supported Apple hardware (* indicates some models may not be recognised): If you e-mail me, I won't share your name or any other personally identifiable information with anyone, although I reserve the right to use the serial number in collaboration with other developers for the purpose of improving this decoder. I can't do much of anything if you don't tell me what Mac you're trying to find out about!ĭon't worry. This includes the specific kind of Macintosh it is, approximately when it was made, etc. If you get an error or "unknown" value, e-mail me the serial number string you put in, along with as much data as you know about the Mac. If you enter an FCC ID by accident, the decoder will remind you of this and instruct you where to look for the proper serial number. Some Mac Plus models had the serial number sticker on the bottom of the case. Early Macs had the serial number located below the lower-left corner of the screen, not on the back. ![]() The two are commonly confused on early Macs, particularly the 128. Important note: if what you think is the serial number starts with "BCG", congratulations! You've found the FCC ID. If you get the "invalid serial number" message and believe the serial number to be valid, please e-mail it to me, along with a thorough description of the product. I have expanded the regex string matching, and just about any serial number from any Mac hardware will validate. Any spaces or asterisks can be left out, as they are not considered to be part of the serial number. To use this decoder, simply type in your Mac's serial number (the decoder is case-insensitive) and click the Decode button or press return/enter. If you have keyboards, monitors, mice, or other accessories with a serial number, e-mail me as much data as you can about them and I'll see what I can do. I could also use a hand with other Mac accessories, particularly from the beige era. If you can help, please e-mail me with all the data you have. I'm looking for Apple II-era serial numbers and accessories, along with Apple III and Lisa data. A big thank-you goes out to everyone who submitted serial numbers in the last year or so - you've helped to improve the decoder immensely! If you run across an unsupported model, e-mail me with as much data as you know about the computer (model, model number, CPU speed, where it was made, when it was made, etc.) and I may be able to add support in a future revision. The decoder script has undergone a thorough revision and now supports more models than ever before. Welcome to the pickle's Macintosh serial number decoder. Early Mac Serial Number Decoder Early Mac Serial Number Decoder
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