Australian lumber is a whole different world. Maybe some sort of blackwood or a eucalyptus? That figuring doesn’t look like any pines or cypresses I know of.
Regardless, it looks like whoever made that was not fucking around. That thing looks to be built like a brick shithouse. They even alternated the growth rings on the top, though I understand that only helps a little and can result in “rippling” when a consistent cup might have been controlled equally well; still, it’s a classic technique. You may want to wax those slides if the drawers bind at all, and if the pulls don’t look original, I might find something else, but that’s just an opinion.
Meanwhile, I’m over here trying to decide how much desk I can build with a single sheet of plywood and a 2x8, and whether it would look any better than my 15 year old Ikea trestle table that was cheap when I bought it.