This is Pane 4 in the PSB and contains:   4 x 1st Class Vermillion Red Machins with M18L + MPIL source code, and four Poppy Stamps plus central label.  

SG Numbers:  
1st Class Vermillion Machin - U3156
Poppy -  3717

PVA gum.   

According to pre-issue information provided by Royal Mail, printed in Litho by International Security Printers. 

The pane is supplied exactly as shown in the picture. 

Single stamps from this pane as well as the complete PSB are also available in my eBay Shop. 

Other Booklet singles, and Full Booklets also available in my eBay Shop, please Click here for details.

Lots more GB items, Mini Sheets, Presentation Packs, Booklets and Smilers Sheets in my shop, please click on the links to the left to browse.

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