black reverse horse culatta one piece leather card casethe card case has been hand cut from a butter soft full grain washed and tumbled 2. 3mm vegetable tanned reverse matte black horse culatta leather with a visible layer of subdermal cordovan. culatta is a special cut combined of the rear just above the cordovan, the belly middles and the hind shanks, offering a dense structure, tight grain and medium to firm temper. crafted from a single piece pattern without the use of machines, the cardholder