The Barbie and Ken Double Doll Case in Blue from 1963 by Mattel is a vintage collectible featuring the iconic Barbie and Ken characters. Made of vinyl, cardboard, and plastic, this hinged box with a glossy finish is designed to hold standard-sized dolls. The case has a buckle fastening and measures 12 inches in length and height, with a width of 10 1/2 inches. A nostalgic piece from the 1960s, this original owner's item is a must-have for any Barbie enthusiast. Rough. I played with this so much as a child and it has been in storage for 50+ years.