Help identifying candelabra marker and metal type

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.