Hi,
I have found some exellent copies of the famous Juynboll catalogues,
complete ( scarce) sets for sale about Java, Sumatra, Celebes and Bali.
Note that almost all objectnumbers are still active so with the catalogues you can find very easy the object you are looking for on the RMV site.
see for an impression the page
http://www.mytribalworld.com/pagina111.html
Arjan