Once you start down the OEM date code path, you tend to want more and more....

Electrical components are usually dated by week/year. So a 12 9 (starter barrel) or 12 69 (alternator stamp pad) code is the 12th week of 1969. Inventory management in 1969 was nothing like it is today. A window of 6 to 2 weeks prior to production date is considered acceptable for the parts you are looking for.

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