The film of Going Postal, produced by The Mob, required a range of stamps and sheets for possible use as props during filming. These are bit of a hybrid production, with the original Batley & Edwards artwork and design used for third party laser printing. The 10p Morporkia was one of seven stamps chosen to be props, but so far I have not seen these featured in the resulting film production (that honour belongs to the Assassins Guild Three pence and Unseen University Penny Farthings - but you may be more sharp eyed). The actual sheets are much larger than the Enschede or Emporium sheets, were numbered, and interestingly had “Engraved and Printed by Spools of Ankh-Morpork, 12 Dimwell Street” in the upper right margin. There were in fact 88 stamps per sheet, and probably because they were only film props the print quality was marred by streaks in the direction of printing but obviously deemed irrelevant. This suggests a ‘wet’ print technique being used, such as an inkjet. They were line perforated a 10.5 holes per 2cm (yet a fourth perforation variation), and close examination shows some pins were slightly out of line. Both these faults can be seen on a larger image of the sheet.

Officially these are not considered to be Discworld stamps by the Discworld Emporium, but this would seem to be based on them not having being sold by the shop. The film prop sheets being sold and in collections are those from the assets of the film company being disposed of. However, they were inadvertently given a thumbs up during the Discworld stamps 10th anniversary celebrations, used as photographic props by Bernard Pearson and Terry Pratchett. That said, these have not had the same quality assurance applied to the recognised Discworld stamps, and will be of limited appeal to collectors.

Yes, those sheets hanging up in the second photo are Going Postal film props which were lurking somewhere in the Emporium. While the 10p Morporkias were not used for the shot, there is no reason to suspect their provenance is any different to those shown. There is a big difference between the sheets of 91 Penny Patricians shown in the ‘Then’ photo, and the sheet of 180 behind the happy protagonists in the “And Now’ picture.
Despite the sheets appearing in those publicity shots, production of them was entirely outside the influence of The Discworld Emporium despite their best efforts according to a reliable informed source. Despite the printing flaws, these are best considered DW collectables, as opposed to official Merchandise, but in my opinion still have a place in a collection if desired.

There are two major differences between the regular DW stamps versions of the 10p Morporkia and those destined as film props. The background to the value tablet on the props is, for some obscure reason, shaded green. Could it be that the image files used for the props were an older and rejected version of the stamp design? The prop stamps are also smaller measuring just 35 x 30 mm. These two images, side by side, really demonstrate the perforation differences too.