Origami Owl Necklace with charms

Customized Origami Owl necklace with charms. 13-14” silver chain. Some discoloring in a chain, see pic. I’m not sure of the metal content since this was given to ne as a gift years ago. I do not believe it’s sterling silverdye to the slightest discoloration and the absence the 925 usually present with sterling. Still a great piece that can be further customized.