Vintage Ace Double Sci-Fi Paperback (1965): Planetary Agent X / Behold the Stars

Title: Planetary Agent X / Behold the Stars (Ace Double M-131)

Authors: Mack Reynolds (Planetary Agent X) / Kenneth Bulmer (Behold the Stars)

Publisher: Ace Books, Inc.

Publication Year: 1965

Format: Vintage Paperback (Dos-à-dos / Ace Double)

ISBN: None (Pre-dates standard ISBN assignments; listed under Ace Catalog Number M-131)

Description & Condition Details

A classic 1965 Ace Double featuring two complete vintage science-fiction novels in one flip-format paperback:

• Planetary Agent X by Mack Reynolds

• Behold the Stars by Kenneth Bulmer

Condition Report:

• General: Acceptable / Fair vintage condition.

• Covers & Spine: Shows light shelf wear, edge rubbing, and minor corner creasing along the edges. The spine is intact with light cracking/creasing along the hinge margins consistent with age.

• Pages & Block: Heavy, age-appropriate tanning/toning to the paper pulp throughout.

• Flaws: Notable damp/water staining visible along the top right edge of the interior endpaper/copyright page (does not obscure any text) and faint staining/spotting along the top page edges. Binding remains intact and readable.

Item Specifications

• Format: Mass Market Paperback (Vintage Ace Double)

• Dimensions: Approx. 10.8 cm x 16.2 cm x 1.2 cm (Standard US vintage mass-market size)

• Weight: Approx. 110 grams

Note to Buyer: Photos show the exact item you will receive.