London, England, United Kingdom, 1905–1925 (Publisher)
The Regent Publishing Company, Ltd., located at 310 Euston Road, London, was founded by Robert Ferdinand Hunger, and the business entered the postcard market in 1905. The original card series were called the Prince Regent and had the mark R.F.H. London. The company published both real photograph postcards, some of which were hand-colored, and artist postcards.
References
Anthony Byatt, Picture Postcards and their Publishers (Malvern: Golden Age Postcard Books, 1978), 229–30.