The bible Tupac read while serving time at a maximum security prison is up for sale ... and it's expected to command a pretty penny, thanks to the rapper's John Hancock.
We're told a member of Tupac's family put the bible in the hands of online dealer Moments in Time -- which set the price at a cool $54k. The late rapper signed it along with his inmate number from the 9 months he spent at Clinton Correctional Facility in 1995.
You'll recall Tupac famously gave his "homeboys in Clinton Max" a shout-out in "Hail Mary."
Important note ... we're told Tupac's estate is not behind the sale. But when the bible sells we're told the family will get a bulk of the cash.