Two of Tone Silver/Gold Cross Necklace

$15 or best offer. This necklace is made from a metal mix. The cross is stamped 1/20 12K G.F. I’ve never seen the 1/20 included, but the cross is a good fill mix. There are no stamps in the necklace. Given the color of the chain, I’m thinking it’s a stainless mix. Don’t quote me on that tho. :) The chain is 18”. There is some staining/discoloration on the cross, but is really only visibly upon close inspection. There’s also a weld spot that glass the cross, but more visible the closer you look. Noted in last pic.