There is no authenticity card but a label on the box. Im guessing the label tells style number, leather and color.
The item "Brand New Authentic Balenciaga Key Case Black" is in sale since Thursday, May 17, 2018. This item is in the category "Clothing, Shoes & Accessories\Women's Accessories\Key Chains, Rings & Finders". The seller is "hailuyu2009" and is located in Hacienda Heights, California.This item can be shipped to United States.