I've acquired an original Macintosh system and am confused by the serial number of the keyboard. The machine is week 3 of 1984, but the keyboard is week 2 of 1983. This seems odd to me. I also don't know how to decode the production number which is showing as 12061. I cannot believe that there were 12,000+ keyboards manufactured so early.
Any information would be appreciated.

Any information would be appreciated.

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