D'Angelico had a heart attack in 1959 and also parted ways with DiSerio, who left to work at the Favilla guitar company. As a result, he closed the business but soon reopened it after D'Aquisto who was unable to find work, convinced him to do so. After several more heart attacks and having also suffered from pneumonia John D'Angelico died in 1964 at the age of 59. He had built 1,164 numbered guitars with the last ten finished by D'Aquisto. D'Aquisto then bought the business but a poor business decision lost him the right to the D’Angelico name.