This is DOKTOR NIKOLA by Guy Boothby, published by Hver S. Dag's Forlag in 1899, quarter leather hardcover binding. 11" tall, 652 pages, text is in Danish.
Boothby was once well known for his series of novels about Doctor Nikola, an occultist anti-hero seeking immortality and world domination.
Please see photos for more on contents and condition.
Hardcovers, quarter leather binding. Hardcovers are in somewhat rough condition: tail of spine end is gone, there are tears at hinges, worn edges and surfaces. Pages are clean, toned with good binding.