Heavy Modernist Sterling Silver 925 Bracelet Sand Cast Design 55g TF-29. In the absence of not knowing what to call this design, we decided on knot, ribbon or Sand Cast Design. A sideways butterfly was also offered. What we can tell you is that it?s heavy. As in 55 grams heavy and feels quite substantial when you hold it. It?s marked 925 EC_ and TF-29 indicating made in Taxco Mexico by a silversmith whose first initial of last name is F and he/she was licensee #29. Bracelet has a nice push button lock/unlock. Usually this style is reserved for higher end designs. We are not sure what the EC_ means as the makers last name begins with an F and the 3rd letter possibly another C or an O or a G. We have found nothing. Will ship USPS first class with tracking to the winning buyer