Question: the places with the biggest keris collections

[wolviex]

Dear Kerislovers!
Maybe it is not new question, but I was wondering about the biggest centers, outside the Malay Archipelago, where you can find keris (private) collections?
What are the museums where you can find the best kerises, and which are the best kerises holders, in your opinion?
I don't have specific knowledge on collectors market but it seems to me that there are very strong centers in USA and Holland, don't know if I'm right, and I hope you'll give me enough answers.
If there was no such thread before, maybe this one should be an occasion to create museums list from this point of view.

Thank you