1973. Twenty-seventh edition. 692 pages. No dust jacket. Black cloth covered boards with gilt. Pages remain bright and clean with minimal tanning and foxing. Some cracking to gutters with exposed netting. Binding loose. Previous owner's name to front pastedown. Boards have moderate shelf wear with mild bumping and fraying to corners and crushing and fraying to spine ends. All surfaces tanned and sunned, particularly spine. Gilt lettering to spine is dulled but remains brighter on front. Some additional mild marks and staining.