Overview
The item is clearly identified by its cover and copyright page as a hardcover copy of 'Sphinx' by Robin Cook. The copyright page indicates a 1979 copyright date and provides an ISBN.
Identification
Sphinx by Robin Cook, Hardcover Book
Photo reference
2 uploaded photos
Story
Published in 1979 by G. P. Putnam's Sons, 'Sphinx' was Robin Cook's third novel, following his breakout hit 'Coma'. It marked a brief departure from his usual medical thrillers into the realm of Egyptology and archaeological suspense. Robin Cook's early medical and mystery thrillers are common in the secondary market due to high initial print runs. While true first editions hold some collectible interest, the market is primarily driven by reading copies.
Maker / Origin
G.P. Putnam's Sons
Condition & Value
For modern first editions, value is highly dependent on the condition of both the hardcover boards and the dust jacket. Any tears, foxing, or loss to the dust jacket will severely depress the value, as seen in the comps where a poor jacket drops the price below $10.
Full Research
See what it's actually worth.
Sold comps, value drivers, and venue guidance pulled from recent auction results.
Market Analysis
Robin Cook's early medical and mystery thrillers are common in the secondary market due to high initial print runs. While true first editions hold some collectible interest, the market is primarily driven by reading copies. Prices remain relatively flat, with premiums reserved strictly for pristine copies with unclipped, near-fine dust jackets or signed editions.
Value Drivers
▲ First edition status of an early Robin Cook novel appeals to completist collectors.
▲ Presence of the original dust jacket is critical for maintaining baseline value.
Concerns
▼ Dust jacket condition is unverified — tears, chipping, or price-clipping will drop value toward the $8 floor.
▼ High original print runs for Cook's novels cap the overall ceiling for unsigned copies.
Best Venue
For a fast sale on a general marketplace like eBay or Mercari, list at $20-$25 if the dust jacket is intact and in Very Good condition. If the jacket is heavily worn, clipped, or missing, bundle the book with other vintage thrillers to save on shipping and attract casual readers.
Upside Potential
If the book is verified as a true first printing in pristine, unread condition, or if it contains a verified signature or inscription from Robin Cook, it could exceed the $45 high estimate and appeal to dedicated author-specific collectors.