Calf leather
Calfskin leather is a type of leather that is made from the skins of young cows, usually under the age of three, which are tanned to obtain a fine leather material with unique characteristics that is widely used in the fashion industry.
Like veal, calfskin leather is significantly more expensive than leather made from older cows because of how soft and supple it is. This means that smaller objects are usually made out of calfskin leather due to the ease working it. These items can include items like patent leather shoes and leather gloves.
Crust Calf (below) Crust calf is untreated (read as not dyed) leather. It is left intentionally natural in color in order to allow for a coloring process after the fact (i.e. not in the tannery, but rather by the shoe factory, a patina artist or some other 3rd party).
As a general rule of thumb, lambskin is best for leather garments (jackets and coats) because its soft texture easily forms to the body, whereas calfskin is better for accessories (shoes, handbags, wallets, and related accessories) because it is tougher and retains its shape better.