When the Star Kings Die

From Author Wars - https://authorwars.com/publications/when-the-star-kings-die-180069.html

Overview:

Title: When the Star Kings Die
Author: John Jakes
Year: Unknown
Publisher: Priory Books
Price: £0.25
Pages: 160
Binding: Paperback
Type: Novel
Title Reference: When the Star Kings Die
Notes: There is no printing history other than 'First printed by Ace Books, Inc.'
OCLC has this Priory edition listed as published in 1967, but it's not clear if they are using the publication date of the first Ace edition.
Other prices: U.S.A. $0.95; Australia & New Zealand $1.00 South Africa $0.75; Canada $1.00.
Printed in Israel