Knut Ericsson started racing in 1948, the first year of competition in Sweden, in his own Knut Ericsson Special, which we know nothing about. He achieved some very respectable results including:
Knut changed to an Effyh for 1950:
Knut at Brands Hatch in May 1951
Please get in touch if you know more of Knut's life or the KE Special.