This is a working View-Master Pana-Vue 1 lighted 2 x 2 slide viewer. It comes in the original box with the paper guide. It will need 2 "C" batteries My parents bought this in the 1960s or 1970s, when slides were still big. A Pana-Vue Transformer was optional. There is no cord transformer. I do not know if my parents did not buy it or it is lost. This has been stored away for decades. It still works. The box has some chafes, dings, cracks, and scuffs. I am downsizing and am selling most everything. Non-smoking household.