Salaams all ...
Marcus den toom... That is very cheap... maybe there are a lot of them ... 

  as for the Portuguese pre 1650 Omani Chests add a couple of zeros as there are very few left.
 
Jim~ I have no evidence to hand about the Armada boxes but the Portuguese may have used them aboard in the Indian Ocean. 
This is a great topic. I remember that when I got the Javanese weapons chest in Dubai the story was that it was from Jerusalem and had been used in a monastary for vestment plate and religious items etc...
 
The big Portuguese Chests are called "Caizas a Sugar" in Portuguese (excuse my spelling) "Sugar Boxes" and in their found condition these great spices chests were preserved under a thick coat of bat droppings! 
 
 
Regards,
Ibrahiim al Balooshi.