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Escapes aids...special wireless receivers.
A rare book documenting James Bond-style gadgets that were invented by a real life 'Q' to help British prisoners of war escape has come to light.
The top secret catalogue consists of 76 pages of photographs and descriptions of the ingenious covert equipment sent to PoWs under the noses of their Germans captors.
The items included tiny compasses concealed in cufflinks, fountain pens, pipes and even gold teeth.
Silk escape maps of Nazi-occupied Europe were folded and hidden in cigar holders and vinyl records while small cameras were concealed in cigarette lighters.
Some 100 of the book were printed and one is now coming up for sale.