1925 circa Louis Oppenheim Reklamemarke Graphische Kunstanstalten Ed. Strache Der beste Verkaeufer, Louis Oppenheim, circa 1925

One of 9 advertising stamps designed by louis oppenheim (lo) or oskar laske around 1925 from a series for the graphic art institutes ed. Strache, warnstorf in bohemia, here with the text "the best seller for your goods is a good poster, produced in the graphic art institutes ed. Strache, warnsdorf i. /b. " see also the german national library: https://d-nb. Info/1153991675. Date: circa 1925.