Case of the U.S. Supreme Howin Leather Company. A long-established Tanner Howin company in Chicago, Illinois, USA. A case of using leather purchased directly from a tanner with the highest quality material and work performed by a professional professional who has more than 20 years of experience. Tanning tanned Tokyo pig leather is attached to the lining, and ages change every time you repeat the use. All metal parts are made of brass, including hooks stamped with plandrogo. Cases of looking forward to aging.