First published in London in 1894 by Chatto & Windus with 6 illustrations
First published in New York by R.F. Fenno. No date is found anywhere within the first edition, but it is likely circa 1897 since in 1898 Fenno published Mitford's THE GUN-RUNNER and the title-page for Fenno's THE KING'S ASSEGAI lists THE SIGN OF THE SPIDER, which was published in 1896. The Fenno American first edition has the same illustrations as the British first edition.
Either first edition is rare today, but the American is far more uncommon
My copy of the 1894 Chatto & Windus first British edition of THE KING'S ASSEGAI
Frontispiece for the British first edition
Title-page of the British first edition
5 illustrations by Stanley L. Wood
Ads at the end of the British first edition are dated February 1894
An ad for THE KING'S ASSEGAI appears at the front of the American Fenno first edition
Frontispiece for the American first edition
Title-page for the American first edition
Brian Stringer owns a unique American edition The Pratt Book Store in Denver Colorado issued an edition in plain card covers, but with same frontispiece, title-page, illustrations, and pagination as the American first edition
This unique edition has a copyright page specifying a year of 1897
Click the photo below to see more about The Pratt Book Store