Question about a Dha

[Battara]

Right Andrew - on the money!

I can tell that if the middle one has silver, it is a very low silver, but I would say most likely it is brass.

The one on the left is low silver (if any silver) or perhaps nickel silver (no silver content) with perhaps a low silver pommel.

The one on the right seems to have silver content.

Again: different alloys = different patinas.