This is "The Urbinian" by Rafael Sabatini, in a first paperback edition published as a promotional give-away by Houghton Mifflin in 1923. This edition features the first of seven stories in Sabatini's "The Banner of the Bull", published later that year. Bound in at the front is a complimentary card from Houghton Mifflin, and at the rear is a postcard regarding the publisher's complete edition of Sabatini's works. Condition of this trade paperback is Very Good, showing some discoloration and creasing to the lower right corner of the front cover, and rust stains from the stapled binding. Please see my other fiction listings.