Answer: The difference is a manufacturing error – picture
one shows that the stamp pane has been MISCUT and therefore
increases its value to £220.00, from a normal £6.00
There are two ways to identify the ‘miscut’ booklet
- You can see the printers ‘cutting guide’ of
a red line in the centre of the pane margin in image
1 above ... the cut lines would normally be on either
side of the pane’s margin, or they would not
be seen at all Also, the 12.5p stamps in image 1 are
at the left of the pane and not the right.
Adding to the rarity factor is that printers (& the
Post Office) are at pains (and take steps) to try and
prevent these "errors" or "defects" from
getting out for sale to the public – as you can
see, and fortunately for collectors – they are
not always successful!!