Harris says Beaman heard the plates klink.
Martin Harris, in Joel Tiffany, "Mormonism—No II," Tiffany's Monthly 5, no. 4 (August 1859): 167
Joseph then took them [the plates] out, and hid them under the old cooper's shop, by taking up a board and digging in the ground and burying them. When they were taken from there, they were put into an old Ontario glass box. Old Mr. Beman [Alvah Moses Beaman] sawed off the ends, making the box the right length to put them in, and when they went in he said he heard them jink, but he was not permitted to see them. He told me so.