SPQR

From Author Wars - https://authorwars.com/publications/spqr-31839.html

Overview:

Title: SPQR
Author: John Maddox Roberts
Year: 1990
ISBN-10: 0380759934
Publisher: Avon Books
Price: $3.50
Pages: 229
Binding: Paperback
Type: Novel
Title Reference: SPQR
Notes: First printing by number line. Published later as "The King's Gambit" C$4.25 in Canada. Maps by Loston Wallace.