Joseph calls plates "plates of gold."
Joseph Smith, Journal, 1835–1836, 24, The Joseph Smith Papers website, accessed August 11, 2021
[H]e said unto me I am a messenger sent from God, be faithful and keep his commandments in all things, he told me of a sacred record which was written on plates of gold, I saw in the vision the place where they were deposited, he said the indians, were the literal descendants of Abraham