Re-using unique content from my sites that no longer exist

I'm wondering if it's useful from a SEO perspective to use unique content from sites that no longer exist. This means my own sites that were once on the web but have ceased to exist. I have saved the articles/blog posts that I used for these sites, and since the content is no longer indexed on Google (as the sites are dead), presumably it won't be treated as duplicate content. There would be at least two options for using this content:

1. Using it for link building purposes.
2. Using it for my new site (as it is on the same niche).

But is this type of content nevertheless somehow less valuable in Google's eyes in comparison to content that has never been published before? Is there any chance that Google will penalize it?

 

Its better not to use them since they were indexed before.

 

don't worry if this content is yours and now not published anywhere in the internet you can use this again.

 

Well, i think that that contents already is indexed in google. You can check that by doing a index search in google. You may go for fresh content. Thanks.

 

You should go with fresh content coz, google has already index that content. You can check your content with plagiarism check so that you will come to know about duplicate content.