Antique Keystone Stereoscope Eye Comfort Training and Depth Perception Set. Set includes: Stereoscope depth perception viewer (sold only on prescription) with 12 eye comfort slides (1 - 12) with Instruction Booklet and paperwork. Complete set. Stereoscope shows age marks, no dents in metal and some paint loss. The cards are in excellent condition. Instruction Booklet shows light age discoloration. Very nice set. SEE PHOTO'S. ALL ITEMS ARE OFFERED "AS IS" WITH NO WARRANTY, EITHER EXPRESSED OR IMPLIED. ALL ITEMS COME FROM ESTATE SALES, YARD SALES, FLEA MARKETS, ETC. AND MAY HAVE ABSORBED SMELLS FROM YEARS OF STORAGE. WE WILL SHIP TO ANY COUNTRY PROVIDED THE ITEM CAN BE INSURED. IF THE ITEM CANNOT BE INSURED, WE WILL CANCEL THE ORDER. PAYMENT IS DUE WITHIN 7 DAYS AND YOU WILL BE SENT A PAYMENT REMINDER AFTER THE 2ND DAY OF NO PAYMENT, OR NO CONTACT FROM YOU TO ME. NON PAYING buyers WILL BE REPORTED TO , AND THE ITEM WILL BE RELISTED AND RESOLD. WE DO NOT ACCEPT RETURNS. WE DO NOT ISSUE PARTIAL REFUNDS. response WILL BE LEFT ONCE YOU LEAVE US response TO ENSURE THAT YOU RECEIVED THE ITEM. IF YOU HAVE ANY PROBLEMS, PLEASE CONTACT US FIRST BEFORE LEAVING A NEGATIVE.