Old version of Adobe

Why Not to Buy Adobe Software on eBay, Craigslist or Amazon:

https://prodesigntools.com/dont-buy-adobe-software-on-ebay-craigslist-or-amazon-marketplace.html

There are plenty of versions of Acrobat before 2019, but Adobe doesn't sell any of them, so be careful purchasing them from other vendors. You're very likely to get a pirated version, or one infected with malware and viruses.

==> https://community.adobe.com/t5/the-lounge/history-of-adobe/td-p/11636492

==> https://en.wikipedia.org/wiki/Adobe_Acrobat_version_history