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The postcard depicts Kartause Hain, a Carthusian monastery located in Düsseldorf-Unterrath. The image shows a scene from the holy mass taking place at the monastery. The postcard was published by INTERPHOT, a publishing company owned by Hanns Tschira in Baden-Baden. The monastery, known for its tranquil setting and religious significance, has a long history dating back to its founding in the 14th century. The Carthusian order is known for its strict monastic life and emphasis on solitude and prayer.