Expired domain with wikipedia links

I've found a domain that's expired a few years ago with over 60 links with about 5 from wikipedia (including a profile page) with a PR of 5. The links on the "regular" pages have been there for a few years.

I know that wikipedia has started a nofollow link rule, but would this domain name that was registered in 2005 being a wise investment for me?

What topic is it on?

If it expired a few years ago, how has it still got a PR 5?

It depends on how much it is. And I am to wondering how it has kept it's PR after a few years.

OP is saying that 1 out of the 60 links pointing to the domain is having PR5, the domain
must be having a PR 0 .