Very nice choker length cylindrical tube style in good quality sterling silver made in Taxco, Mexico. In good vintage condition the necklace is marked MSO 925 Mexico and with what appears to be eagle 3, although not a complete image. It is 16" long and has 14 cylindrical tubes that are each 3/4" long which are connected with O rings. The clasp at the back where marked is a heavy well made fold over clasp to slip the other side in which is a larger O ring and that O ring needs to be tightened, although it does not fall through. The fold over clasp is another 1" long for a total length of 17". I have not been able to find the maker's mark of MSO so it is a mystery to me. The necklace weighs 28.60 grams or 1.03 oz. and is one of those necklaces you want to wear all the time!