Vintage Ethnic Necklace

Unmarked ethnic style necklace. I have always been enthralled with this necklace and how it is formed. It is basically made of graduated size metal disks that fit together to make an extremely smooth necklace. When you look at without strong light, it appears to be silver, but in bright light, you can see it is lightly burnished in a golden coppery finish. The portion that actually touches the neck is composed of silvertone beads which provides a comfortable fit. It is 36 inches in length. I will be happy to answer any questions and provide additional photos. I need your zip code to calculate the postage.