Production date code

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#1
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I have an AD704J DIP14 chip with additional information scribed upon it

T9625

and

N21323 0

Wish to know date when produced, suspect week 25 of 1996.

Tried to locate the format on Analog Devices website with no joy, need confirmation of date of manufacture.

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There was me guessing week 23 of 2013 ;-)

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Sounds like a reasonable guess.... except it was replaced by a chip with following markings

AD704
J #1207
P2303495.1

Thank goodness they make a decent op amp