What is the as period if I buy a used Nintendo Switch?

nintendo-co switch used as

I bought a used Nintendo Switch, but the seller said that it was purchased around December last year. If there is any chance to receive an as later, how can I measure the as period?

1366 2019-04-25 Gentleman

A. 1

In that case, it will be based on the manufacturing date

Gentleman 6 years ago 0

A. 2

There should be a part with the date of manufacture
It's common to apply it loosely based on that

Gentleman 6 years ago 0

A. 3

Thank you.

Gentleman 6 years ago 0

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