Vintage NSI Rolling Stones Electrically Operated Rock Tumbler DIY Stones Educate

Here is an electrically operated Rolling Stones Rock Tumbler. My daughters has had this for a while but never used. We got it, It came with all of the original sealed bags to use in the Tumbler and the Tumbler is clean. Please feel free to ask questions. No flaws that I can find. All of the paperwork seems to be there as well.