Six years of delay
When the postal administration of a particular country orders stamps, that country also expects these stamps to be delivered quickly by the printing press. However, if a war breaks out, something can sometimes get in the way that delays delivery.
Printing house Joh. Enschedé en Zonen in Haarlem printed and continues to print stamps not only for the Dutch postal service, but also for many countries in and outside Europe. This also applies to Guatemala, a country in Central America.

After reading this (nice) little story, you wonder what else survived the war in the vaults at Joh. Enschede in Haarlem and was only delivered and issued after the war. After all, as mentioned, the customers were located all over the world.
Ton Cornet, Paper & Printing Netherlands.
'@Cees
Nice story—well-known, but still. Did you delve into Museum Enschede for it?
@ton
There weren't very many customers left just before the war …
See:
http://www.xs4all.nl/~dziewon/fila/jezabroa.htm
Rein, I have seen the site. Very interesting, but I didn't know about it. Ton Cornet.