1964 New York World's Fair "3-D Viewer-'n-Slides", "New York World's Fair" including 5 pictures "in Living Color". The viewer and slides are in the box that is also "Ready to Mail". The box has holes so you can look through them to see the place where the slides would be located (when you look in the box, you see the white background). The back of the box has a place to fill in the mailing information. The postage rate was 6 cents. Size: 4" wide by 3" deep by 1 1/4" thick. Condition: The viewer and slides are probably Mint since the box has not been opened. The box has a rough edge on one flap.
