Modernist Buckle ring sterling silver and 18kt yellow gold vintage kinetic hand fabricated

Sterling Silver and 18kt gold modernist buckle ring, the belt loop moves along adding a sweet kinetic element to this ring. It was handmade and as for when, my best guess is in the last 60 years?! Cartier had done similar 2 metal buckle rings in the 70's.. Dimensions are as follow Ring size US 6 3/4 FR 53 and UK M 1/2 The with of the band is 5mm and .8mm thick Thanks for reading!