At first glance it looked like it could have been anything from a coastal taipan, or a brown, or even a black.........but i'm going with...............Tiger!
Originally i thought a Coastal or a Brown......then maybe a black, no definately a tiger.............after having a good look at the head scalation, i'm guessing Taipan too.
Well done sturdy, they are good pic's....and obviously confusing to id correctly.
How old is it?
That is extremely difficult to identify....what is it?