Dear Ibrahim,
regarding the information from Wikipedia regarding the travel of Hasekura Tsunenaga and acquisition of the weapons:
Actually he was leaving Spain in June 1617, so the 1616 on the map from wikipedia is a mistake.
The only scholar publications I am aware, which raise the question about provenance of keris and kastane are "A fundamental study on Hasekura's kastane and kris" (Bulletin of Sendai City Museum) and "The kastane and the kris, their arrival in Japan in 1620" (in Royal Armouries Yearbook, vol. 3, Leeds), both written by Sasaki Kazuhiro, curator of Sendai City Museum, in 1998. Before there are only two publications of Sendai City Museum from 1988 and 1995.
Sasaki Kazuhiro has the oppinion, both keris and kastane are presented to Hasekura Tsunenaga by Philip III. Here in short he's points and other interesting details:
Among the 52 mementos that Hasekura brought to Japan, only three were presented to Date clan: portrait of Pope Paul V, kastane and keris.
Date Masamune drafted official letters only to Pope, the mayor of Sevilla and King Philipp III.
Masamune allowed Hasekura to take care of all official contacts with dignitaries in other countries.
Masamune obviously had great interest in the messages and gifts these figures bestoved on Hasekura.
Then Sasaki Kazuhiro writes:
"If we suppose Masamune requested only the articles from the three men he deemed most critical, then the two swords should have come from one of these three men. (...) it seems much more likely the Namban swords were a gift from Philipp III. This would also explain the reason these gifts made their way to the Masamune collection, while presents from dignitaries in other locales were allowed to remain in the Hasekura collection.
(...) Certainly, Philipp III knew Date Masamune would be pleased with the presentation of the swords, as he had been presented eight armours and one sword by Shogun Tokugawa Hidetada and the former Shogun Tokugawa Ieyasu as a sign of friendship between the two countries. Howewer, he could not present Spanish arms to Date Masamune because the presentation of Spanish arms to a foreigner was then prohibited by law."
Here are the detail pictures of this kastane. The blade of it is the only straight one I have seen fitted as a Kastane and is a very interesting one. There are two markings on this blade, and one of them clearly is of christian origin, yet I suppose, we could conclude with some certainty that the whole blade isn't made in Europe. Curiously enough, its decoration and fullering reminds me of some chinese swords, like the one in book of Robert Hales, page 197; - yet the chinese blades of this type are (always?) slightly curved.
It is perhaps not widely known, yet Sri Lanka was nominally a vasal state of the Ming Imperium from 1411 on, and sent three more ambassys to China, 1436, 1445 and 1459.
Regarding the
central pommel figure, it almost always is clearly a lion indeed. There is a fair amount of objects made of ivory from Sri Lanka, which entered the european "Kunstkammer" collections at the end of the 16 century. Lion always plays a prominent character and is stylistically very close to the pommel figure of this kastane. The one depicted was acquired before 1542.
And here a link to the post of Prasanna Weerakkody, which is quite informative indeed:
http://www.vikingsword.com/vb/showpo...9&postcount=23