The pants bear no makers label, but are believed to be from the 1960s based on the zippers. Those are Talon at the crotch and Ideal at the pockets and ankles. Pants feature a built-in belt. Heavy duty snaps, grommets and rivers. Also has belts around the calfs. Those belts are attached on the back of the leg and free around the front. Pants are unlined with black poly cotton pocket linings. Believed to be top quality steer hide, but possibly horse.
I was hopeful these would be identified as custom Langlitz Leather or Buco pants, but have found little to support either. If anything the hardware used disqualifies them from being Langlitz as another collector told me. If they look familiar please let me know.