I was sitting at my daughter’s piano lesson, desperate for something to draw and then I looked down at my jeans and saw my zipper. Bingo. I started to draw it and was fascinated by the YKK letters on the zipper pull because they are on every zipper I can recall. So I Googled it and YKK is apparently the brand name of the world’s largest zipper manufacturer, Yoshida Kogyo Kabushikigaisha, in Japan. They make over half of the world’s zippers. Now you know.

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