If we were to put together a ‘Top 4’ of classic knots, then this would certainly be one of them. It is an all-time favorite tie knot that you will enjoy once you have mastered it. It is versatile (almost every tie comes into its own with this knot) and it is relatively straight forwards. Invest a few minutes of your time to practice this knot variant and you will enjoy it for the rest of your life!
https://www.youtube.com/watch?v=t1fM7NNL9Xc
The Pratt Knot (also known as the Shell or Shelby knot) is named after Jerry Pratt (an inventor and member of the American Chamber of Commerce), who made this knot popular and wore it almost daily. In 1986, the then 92-year-old, Jerry Pratt saw that television reporter Don Shelby had tied this knot so badly that it became popularly referred to as the Shelby Knot. The knot was first publicized in the New York Times and the Daily Telegraph in 1989 and gained worldwide fame. Before Pratt became prominent, this knot was already worn under the name of Inverted Half Windsor during the Second World War. A misleading term, because this knot is anything but the opposite of Half Windsor.