Georg Jensen Sterling Silver "Mobius" Large Pendant-Brooch No. 374 by Vivianna Torun.
An iconic design that is beautifully sculptural.
This is a vintage piece from the 1970's that was modified by adding a loop discretely to the back to accomodate a chain or rope. It is in excellent condition. Shown here with a Georg Jensen woven leather cord with sterling silver clasp.
Handmade with a beautiful soft patina. Cord is included in price.
A similar example can be seen in the book, GEORG JENSEN JEWELRY by Isabelle Anscombe, Yale University Press, pg. 279.