BLUE TONGUE SKINKS

I'm adopting a BTS fron a mutual friend who doesn't want him anymore
He's been with 2 previous owners before me and he'll be arriving at my house in 2 weeks as I'm also setting up his enclosure
He's 14" long and seem to be in a good condition, minus a little scar on his tail.
Does anyone know what type he is?

Looks like you are getting a very beautiful classic Indonesian, tiliqua gigas gigas. So when setting up its enclosure humidity will be key, shoot for 60 - 80% ambient. Best of luck.