It is illustrated throughout in b/w and is in very good condition as is the dust wrapper.
When grading books in the VG category, dust wrappers are graded separately, and all flaws noted.
A further 31 books were added to the series after dust wrappers were discontinued.
As with most children's books, dust wrappers can be difficult to come by in Very Good or Fine condition.
Stamps are slammed on the title page, label pockets gummed to the rear pastedown, dust wrappers discarded, covers vulcanised in plastic - or, in those days, a toffee-brown buckram tough enough to withstand acid.
The dust wrapper is faded on the spine, otherwise the book is in very good condition.
Original dust wrappers add several hundred percent (never, never throw away a dust wrapper).
In the earliest state of the first printing, the boy's shorts on the cover and on the dust wrapper are white.
Most commonly though you'll pay a pound or two per copy for the book with or without dust wrappers, so even buying from book shops it's not going to crease you financially.
Nice copies in their jackets or dust wrappers sell now for about £100 without the jacket about £40
The dust wrapper has patina from handling, and some nicks and creases on the edges.
Hardback copies were sold in yellow dust wrappers from 1965.
Some dealers also grade the books and the dust wrappers separately; this, too, is acceptable practice.
The early books have illustrated dust wrappers and the book covers normally had no coloured picture illustration but usually had the title and a line drawing.
All are in very fine condition with very fine dust wrappers except where noted.
Using this logic, the 24 plain-paper dust wrappers were worth $4,000.