The Jewels of Aptor

From Author Wars - https://authorwars.com/publications/the-jewels-of-aptor-117291.html

Overview:

Title: The Jewels of Aptor
Author: Samuel R. Delany
Year: 1977
Publisher: Sphere
Price: £0.75
Pages: 159
Binding: Paperback
Type: Novel
Title Reference: The Jewels of Aptor
Notes: Apparently first reprint of 1971 Sphere edition. ISBN really IS listed as "0 7221 2192 2" which has a bad checksum. A search for this ISBN pulls up the correct record on OCLC, even though the ISBN isn't listed in the record. (This happens when an invalid ISBN is stated in the publication.) Cover artist from artist's website.