Details One of Calleen Cordero's signature artwork is the Concha. Made in full-grain leather and leather-lined, adorned with our CC signature hand studded nickel or brass artwork. With a belt loop so you can wear it outside of jeans or on your waist. A real timeless classic. The more you wear it the better it gets! Handmade. Quantities Limited. Special Orders available. Call 818-285-8533.