Help with previous standalone acrobat pro

I had standalone copy adobe Acrobat pro on my laptop which died.  I want to reinstall on replacement computer.  I dont have any of the old install files or product keys.  It does not show up on the adobe website.  Is there any way to recover the product key from old hard drive to determine the exact version and product key and get it reinstalled on replacement computer?  I dont have a need for a subscription.  I also work offline most of the time.  I just want what I had before, nothing more, nothing less.  Can anyone help me?

Regards

Howard