10th edition, published by Brockhampton in 1967.
5th book in Secret Seven series.
Light blue paper-covered boards.
Dark blue lettering on spine.
Dark blue decoration on covers.
Dustwrapper complete but creased and slightly edgeworn.
Covers faded at edges.
Some spotting to edges of page block.
Names written on front endpaper and half title.
Contents clean and unmarked.
Good condition with dust-wrapper.
Catalogue Number: #100509