Interesting collection of weapons. It reinforces India's place as the homeland of unusual and exotic weapons. Just when you think you've seen em all, something else come along. Any interesting pieces of armour there BTW?
I'm no lawyer, but I have a feeling that if we post our own photos taken with our own cameras, then they are ours to do as we wish with. Especially as we are not putting these pics in a book, selling it and making loads of dosh!
On another point, I noticed that in several David Nicolle's Osprey books, he has photos of objects from museums all over the word, but he always has the words "authors photo" between brackets at the end of the caption.