Tek Toothbrush Modernism Fritz BuhlerOriginal vintage advertising poster in French promoting the Tek brand of toothbrush Demand the small round Tek Exigez bien la petite Tek ronde. Great mid century design by the graphic artist Fritz Buhler (1909 1963) featuring yellow lines to show an eye staring at the round head Tek toothbrush, set against a dark background with the text below in yellow and grey letters. Printed in Switzerland by Wassermann S. A., Basel. Posters by Fritz Buhler form