This is from the mid-1950s and is in excellent condition."SIO" stands for "Speelgoed Industrie Overijssel" or "Toy Industry Overijssel". The factory was located in Vroomshoop in the Dutch province of Overijssel and the company had a sales outlet on Herengracht in Amsterdam. SIO existed from 1938 to 1982 and made a wide range of attractive wooden toys. Unusually for me, I bought this little shop fully fitted out and liked everything that was in it. The only addition I have made is the little German bisculoid dressmaker.