No date of publication but an external bibliography gives a publication year of 1953. The original blue boards, have faded along the top edge, and to the spine; there is a triangular segment of the dust jacket missing to the rear board and a segment missing to the spine – see photos.
Captain W.E. Johns.The Biggles Air Detective Omnibus. London, Hodder & Stoughton, 19056. First edition, first printing. Contains the four novels. Original dustwrapper is Fair to Good; rubbed and creased, chips and tears, with minor loss to corners and spine ends.