London: Sidgwick & Jackson, 1977. Hardcover. 12mo, gluebound. 142pp. First edition thus. Blue textured paper boards with silver spine titles. Light wear at spine ends and tips. Small area of moisture exposure at base of rear board. Some very minor wavering present to first twenty or so leaves. Price-clipped jacket shows light curling at spine ends, with some blue ink staining to interior at base or rear panel. Signed by Silverberg to the title page.
A nice copy of this uncommon first stand-alone hardcover edition of Silverberg's novella, originally published in paperback format in 1958, and later included in Sidgwick & Jackson's 1970 "Robert Silverberg Omnibus."