William Heinemann reprinted EAGLE IN THE SKY several times: in 1974 (reprinted before publication), 1974 (twice more in the same year as the first printing), 1979, 1985, 1987, and 1989 for a Uniform Edition.
It is very difficult to find copies with EAGLE IN THE SKY on the dust jacket spine in the original bright pink color. Most often, the pink has faded to light pink, or off-white.
I found the signed copy below on eBay, but it is not in my collection
I have owned and sold numerous signed copies of EAGLE IN THE SKY. All below are first printings.
Because the dust jacket is predominantly black, it is extremely rare to find one that does not show significant wear and tear.
Doubleday reprinted its first edition so not all copies are first printings of the first edition
The copyright page has to state 'First Edition in the United States of America'
Many copies of this edition were remainder-sprayed by Doubleday. It is tough to find a copy in collectible condition that has not been remaindered. Two of my copies have remainder spray on the bottom page edges of the book, as shown below, with THE SUNBIRD in the middle without remainder spray.