Back in Sweden the brand continued to grow throughout the 1940s and 1950s and at one time had a total of forty-eight shops in northern Europe. In 1953 the accordion production reached its peak with 15,000 units being built. At this time the company also started a number of accordion schools; it is estimated that over 70,000 people have attended these schools. Founder Albin Hagström died in 1952 at the age 47 and was succeeded by Erik Wisén. In 1968 the Super Cromatic was introduced which came to be the last accordion built, with the last one made in 1970.