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I was curious about the postcard's content, which featured Grand Duchess Olga Nikolayevna. So, I searched Wikipedia to learn more about her. Grand Duchess Olga Nikolaevna of Russia (11 September 1822 – 30 October 1892) later became Queen Olga of Württemberg. She was a member of the Russian imperial family and held great appeal due to her beauty, intelligence, and cultural interests. She was regarded as one of the most eligible princesses in Europe, with proficiency in several languages, and a passion for music and painting.