Does Howard Weyahok's scrimshaw carvings on walrus ivory predate the ban?

Howard Weyahok's scrimshaw carvings on walrus ivory do indeed predate the ban on the commercial sale of walrus ivory, which was implemented in the United States in 1972 under the Marine Mammal Protection Act. Weyahok was an established artist known for his intricate carvings, and his work primarily represents traditional Inuit art forms. His pieces are considered valuable both for their artistic merit and cultural significance.