Where can I buy vintage paper for printing?

Question

Seal

There is an ordinary laser printer.
You need to print documents in the old style.
What are the requirements for printer paper, density, color, material.
I just don't know what to look for.

Answer 1

Writing paper . and the density is lower (65 instead of 80), and there is no whiteness.

Answer 2

look at "letterpress" paper, but the disadvantage here is "a lot of dust" when working with it.
There are technologies for "obsolescence" of documents. It's up to you to look for technologies among restorers.
If you need exactly "decoration" antique, type https://yandex.ru/images/search?text=papyrus