Through birch trees in full early-summer leaf, a silver-calm Klopeiner See stretches toward snow-capped Karawanken peaks — Austria's warmest alpine lake caught in its postwar tourism heyday by a real photographic postcard of exceptional tonal quality. A wooden jetty reaches into the glassy water, a diving platform standing sentinel at its end, while a picket fence frames the foreground in a composition that feels both intimate and vast. Postmarked 14 July 1960 from St. Kanzian am Klopeiner See, with a "KÄRNTENS WÄRMSTER ALPENSEE" slogan cancel — literally "Carinthia's warmest alpine lake" — the card was sent by a writer named in the message to a recipient named Klaus in Vienna's 9th district. The Austrian 1-Schilling Jugendwandern (youth hiking) stamp adds thematic resonance to a card soaked in the spirit of postwar Austrian outdoor leisure culture.