H.M.S. HOMAGE

Edna Welthorpe hoaxer perhaps or a gorilla in the roses?
I bought this book for 20p at a bootsale.
The cover has been blacked-out in permanent ink and the title obscured by an ominous Malevich white square. The blurb on the back has been covered in a tall white triangle of paper, now yellow and slightly transparent.
The book is a trashy thriller called The Red Sailor by Patrick O'Hara and the fronispiece where the title appears has been blacked-out so that it now simply reads SAILOR in block capitals and below this in red ink and handwritten the year '1963.' followed by 'Reprinted 1965.'
At the time I thought it worth having perhaps because it might well be some further prank on the part of Joe Orton or a fan following the spirit of his library 'interventions' as inferred by name of the ship on the sailor's hat, the H.M.S HOMAGE