Holland Bottle Opener Blue and White made in Germany vintage

Holland Bottle Opener, vintage, Blue and White, made in Germany EUC - vintage D.B.G.M. = Deutsches Bundesreich-Gebrauchsmuster "An imperial law of June 1, 1891 created the legal requirements for the German Empire, so that the Imperial Patent Office introduced the “German Imperial Utility Model” on October 1, 1891. Numerous products were marked DRGM between 1891 and around 1945 , often with the addition of the sample number, which today makes it possible to narrow down the time of origin of some historical devices that have been handed down in material form to a specific decade. [2] Even a few years after the Second World War, this marking was still occasionally common in West Germany; after the founding of the Federal Republic of Germany, the abbreviation was “DBGM” (German Federal Utility Model)." [wikipedia]