Vintage 14 karat Gold Filled necklace with cognac and butterscotch (?) amber

Vintage Bohemian necklace with natural aamber. In excellent condition. 18" long. The clasp is stamped 14K 1/20 GF, meaning that it, as well as all small round beads, are filled with real 14 karat yellow gold. The amber beads are of two types: round transparent yellow/cognac natural stones, and oval beads that are a mix of what looks like butterscotch amber and transparent cognac amber. Vintage gold filled jewelry is considered quite valuable as not only it is better made than most modern pieces, but it also contains a significant amount of real gold (as shown in one of the pictures).