Once the final design had been approved, it was added to the list of stamps that would be used for the perforating exercise during the press day at Bath Postal Museum. A final check for the printing quality was required first. All the stamps were printed in mini-sheets using the same paper and technology that would be used for the A4 sheets to be taken to the museum. While most designs were in blocks of 4, the Blue Triangles were in a block of 8, with stamps arranged so that the base of one lay next to the base of another, tete-beche.

Satisfied with the results, the first A4-sized sheets were printed. Most values of the first AMPO definitives were to have the majority of their numbers litho printed by Enschede, but the entire $5 Blue Triangle and $1 Tower of Art stock, and some of the other values would have digitally printed sheets. While this process could not compete with Enschede for detail (it is, of course, one of the world’`s leading printing firms) it would have been possible to adjust the printing and speed of printing to produce best resolution required for the stamps.

Press Day was essential what it said on the tin; a chance for photos and write-ups in both the national and local media. Terry Pratchett and Bernard Pearson donned period costumes and tried to master the ancient perforating machine. While not a lot of decently perforated stamps were produced that day, that was not a primary concern; that could be done later at leisure and without an audience. Apparently Terry was well pleased with how the Blue Triangle stamps turned out. Though originally these were intended to be limited to a very small number to be handed out by Terry himself, he changed his mind when he saw how well they turned out, and decided they would be available to collectors; but in numbers limited to just 500 They would not be for sale and only be distributed only in the Little Brown Envelopes. Thus most Blue Triangles are single stamps, multiples do exist in some collections

Did any of the stamps produced on that day ever end in LBEs? It would be nice to know that the rat-nibbled Bath perforated stamp in your collection was one of the few. Unfortunately, there would be no way of telling, and it is highly unlikely that any produced that day went to collectors. The few produced were probably kept as souvenirs by those there. In fact Terry himself had a full sheet to take home.
But more sheets of Blue Triangles were taken to Bath that day than any other value. The reason for this was that it was anticipated that there would be much wastage on the day, but it was the chance to produce the small number of decently perforated stamps required by Terry. What does this mean? It means that there was an awful lot of rejected sheets ending up on the floor with bad or poor perforations; Terry only wanted the best ones. So what happened to these? They were probably collected up and binned. No-one expected these stamps to be collectable or valuable or sought after. Moreover, some of those rejects would be the Sport. No-one knew the Sport existed at the time and several of these must have been thrown out with the rubbish; poorly perforated yes, but you would find room for it in your collection if you had one, wouldn`t you.