This book contains no fewer than 6 - and possibly 10 - new stamps, some of them new versions of stamps issued 20 years ago!
Pane 1 has four 1st and four 20p Definitives, both stamps bearing the double image of Queen Elizabeth and Queen Victoria from the 150th anniversary of the Penny Black stamps, set around a Penny Post label first issued in 1990, with the Penny Black portrait of Queen Victoria in the background.
Pane 2 has four 20p stamps featuring the Royal Mail Coach from the 1989 Lord Mayor's Show issue, showing the door of the Bristol - London Mailcoach in the backgound.
Pane 3 has all four of the Post Boxes stamps in a block of 4, rather than a strip. The background shows a Penfold hexagonal Victorian pillar box.
Pane 4 has four 17p Machin Definitives, two 22p Machins and two 62p Machins around a GPO logo label, the background showing images of the proposed 1937 coronation issue for King Edward VIII.
The book is printed by Walsall Security Print in litho. Doubtless somebody more expert will remind me if any of these are not new stamps because of that!
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