The stamp on the second cover is an unadorned digitally printed 10 pence Morporkia. But do all covers bear the same stamp? These two covers were scanned independently of each other, and so direct comparison of colour shades have to be disregarded; just compare the colours of the actual envelopes.

Are these different stamps or are the differences, such as the colours, just down to imaging variation. What hasn’t been considered yet is whether, even if they are the same stamp, is there any significant difference to the standard Wincanton stamps. That will be revealed on a later page - no teasers.