black coffin nail culatta leather journalthe leather journal has been meticulously hand cut and sewn from a butter soft full grain washed and barrel tumbled 1. 2mm vegetable tanned culatta with a rotten corpse matte black finish. the leather offers a sporadic fiber structure with an array of textures and scarring which are highlighted throughout the piece. culatta is a special cut combined of the rear just above the cordovan, the belly middles and the hind shanks, offering a dense structure,