Help identifying candelabra marker and metal type

Hi,
I’m wondering if someone might be able to help me identify the marking on these candelabra, and also what they are made of? I received them from my late grandmother who had fine taste, and I don’t know anything about them. Thanks for any help you can offer.

If that “K” is the only mark then the candelabras are probably, at best, electroplated. They may even be a polished base metal such as pewter.

Phil