corner of a chip. you can read the text "(C) Intel 1973" and "1602A"
https://files.mastodon.social/media_attachments/files/114/435/713/184/590/783/original/6c35ce6a957d587b.png
the 1702A is quite old as you can see by the copyright on the die. (the 1602A is the non-windowed version of the part, which is identical except for the package)
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