Vintage Sci-Fi Ace Double (1961): The Nemesis from Terra / Collision Course (F-123)

Title: The Nemesis from Terra / Collision Course (Ace Double F-123) Author: Leigh Brackett / Robert Silverberg Publisher: Ace Books, Inc. Publication Date: 1961 (First Ace Printing) Format: Vintage Mass Market Paperback / Flip Book (Ace Double) ISBN: Pre-ISBN Era (Catalog Number: F-123 / Cover Price: 40¢)

Description & Condition Details A classic 1961 vintage Ace Double Paperback (F-123) containing two complete, unabridged science fiction novels back-to-back: The Nemesis from Terra by "Queen of Space Opera" Leigh Brackett, and Collision Course by Grand Master Robert Silverberg.

Synopsis:

• The Nemesis from Terra (Leigh Brackett): Caught in the web of the Fourth World, a Terran standard-bearer becomes drawn into a desperate planetary struggle high in the Martian mountains.

• Collision Course (Robert Silverberg): When Earth's expanding empire encounters another hyper-advanced star-faring civilization claiming the exact same sectors, two galactic giants are set on an inevitable path toward space-age diplomacy or total destruction.

Condition & Wear Report:

• General Grade: Good / Vintage Collector Reading Copy.

• Covers: Displays light edge rubbing, corner bumping/creasing, and minor surface scuffing along the outer cover margins consistent with age.

• Spine: Structurally sound and unbroken; text on the spine is readable, with light surface wear along the fold edges.

• Pages & Edges: Uniform age-tanning/yellowing to the pulp paper pages appropriate for a 1960s paperback.

• Stamps & Markings: Features vintage red and blue ink rubber stamps on the opening page from a historic South African book swap ("Glenhurd Delicatessen / Exchange at the Glenhurd 5c Swop Library, Handsworth Street P.E.").

Item Specifications Format: Vintage Ace Double Flip Paperback Dimensions: Approx. 10.7 cm x 16.3 cm x 1.4 cm Weight: Approx. 135 grams (0.135 kg)

Note to Buyer: Photos show the exact item offered for sale. This is a pre-ISBN vintage 1961 Ace Double collectible. Please review all photos for cover condition and vintage library stamp details.