Japan 2002 questionable Joint Issue

Upeka Indeewary from India did ask: “The joint issue catalogue describes a joint issue from the year 2002 involving Japan and four other countries, namely India, Bangladesh, Sri Lanka and Pakistan. It appears that in Japan this issue is not considered as joint. Can you clarify? “

Indeed this joint issue could be considered as questionable. In the catalogue Vol 8, it is already described under four different entries [P20020411 and P20020412a-c]. While Japan issued all stamps the same day, April 12, 2002, the four other countries’ stamps from India, Bangladesh, Sri Lanka and Pakistan were released with 1 to 14 days interval..

None of these countries claim a joint character, and indeed we also had some questions regarding the true status of this issue. This is the reason why these issues are filed in a category called [PX] and the catalogue uses specifically the word ‘controversial’ to describe them (See also in Catalogue Vol I for the definition of [PX]).

It happens some time that even in case of same data and same design, stamps were issued by two countries with one denying the joint issue status. In fact, in almost all these cases, and this Japanese stamps probably included, a first contact between the authorities took place and topic as well as day of issue were agreed. But during the process, it came to a disagreement and finally each country decided to pursue on its own. For this reason, considering at least the situation of starting the collaboration, we report such stamps in the catalogue.

Obviously, it was not per chance that all four countries came together with Japan and launched almost at the same date each a stamp with the same topic (not the same design) also appearing on the Japanese stamps (relationship). We leave to the collector to decide if such items have to be include or not in their own collection. If these stamps are not described in the catalogue, other collectors would ask why such series are not reported. The [PX] status became the alternative. In any case, present or not in the catalogue, questions would arise. It is possible to definitely state about these Japanese stamps, if someone can bring the real story behind the creation of these stamps.

Can someone help here?