"Wildt & Kray".

Wildt & Kray was a publishing company based in London that produced postcards during the early 20th century. The company was known for its high-quality prints and its wide range of postcard subjects, including landmarks, scenic views, historical sites, and cultural events.

London, being a vibrant and diverse city, was a popular subject for postcards, and Wildt & Kray captured the essence of the city in their postcard designs. Their postcards often featured iconic landmarks such as the Tower of London, Buckingham Palace, Big Ben, the Houses of Parliament, Trafalgar Square, and other famous attractions.

The company's postcards typically had colorful and detailed illustrations or photographs, capturing the spirit and charm of London.