JS claimed he had a peep-stone which had an attraction and was called a "Peeker."

Date: Jan 1888
Type: Periodical
Source: Henry A. Sayer
Critic
Non-LDS
Hearsay: Direct
Late
Reference: Henry A. Sayer's statement in Arthur Deming, Naked Truths About Mormonism 1:1 (Jan. 1888): 3
Scribe/Publisher: Arthur B. Deming
People: Joseph Smith, Jr., Henry A. Sayer
Audience: Reading Public
Transcription: He had a peep-stone which he claimed had an attraction, and he could see hidden things through it. He was generally called the Peeker.
Source Link: http://sidneyrigdon.com/dbroadhu/CA/natruths.htm#010088-3a3
BHR Staff Commentary: Website is not original source.
Citations in Mormonr Qnas: Seer Stones