Tupac Shakur: Resurrected ... Handwritten Notebooks And New Music Uncovered

Tupac Shakur keeps on giving ... with until now undiscovered, unreleased music, handwritten notes and lyrics from the rapper ... and they're going to the highest bidder.

The goods are pretty awesome ... 3 notebooks containing a bunch of handwritten Pac ideas and lyrics, and some CDs with unreleased tracks.

We're told the lucky finder got his hands on the items after answering a Craigslist ad for baseball cards. It just so happened the seller had the Tupac merch too ... his dad worked with the rapper for years.

As for authenticity ... the handwriting in the notebooks matches handwriting in the prison letter that hit the market for $255k in October on the site Moments in Time. MiT is also selling the newly discovered items.

It won't come cheap ... the two-page "Point The Finga" music video notes are expected to pull $35k minimum.

Pac's relatives want to block the sale. Tupac's mom, Afeni, has a strict policy of pursuing buyers and sellers of her son's memorabilia.