Saw this yesterday at the Denver art museum and looked it over closely. All in pine, with rustic detailing.
Was thinking of doing one and trying to get the texture right. The description of the piece included the info that an adze was used, and it sure was evident. I included here, a screencap of a hand adze sold by Highland that might be used to get the results.
If anyone has thoughts on how best to get the textured surface, I would like to hear from you.
The piece was on display and of course one could not touch or open it, but I think that the arrangement of clavos (nailheads) you see on the doors indicates that they are there not for just decor, but to affix crossband slats on the door backs to aid in keeping things flat.
So if I do this piece, I'll do the same, and go a little further if I can when buying stock, seeing if I can get quartersawn material for the door slabs.