Has anyone seen this before

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Last seen: 5 months 6 days ago
Joined: Feb 14 2018 - 18:51
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Has anyone seen this before

Rev 7 board with the numbers 20-80 right by the cpu and even more strange is the p/n 820-0001-0 under cpu

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Last seen: 1 week 4 days ago
Joined: Dec 21 2013 - 20:49
Posts: 20
I have a few apple II and II+

I have a few apple II and II+'s and I have not seen the 20-80 marking before. My guess is that it is some kind of circuit board revision marking.

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