Machin £1 sheet stamp - forgery.
Used copies of this forgery were discovered in June 2016, and it wasn't long before mint copies were available on internet auction sites. Indicators that they are forgeries are that the year code is M14L but they have a source code of MTIL (indicating booklets of 12) rather than MAIL.
The sheets of 25 - with De La Rue cylinder numbers - have the usual marginal markings of bar code, cylinder number etc, and a printing date of 31/10/14 with different sheet numbers.
We are now able to offer a few of these, including date blocks. (Images of used examples from the internet are shown for the record only. We don't have any used copies, and of course it would be illegal to use them.)
Two date blocks of 8,
one block of 4,
three horizontal pairs,
singles - if you require block or pairs please indicate in the 'Additional Instructions' at checkout.