Abstract or Brutalist Mid-Century silver Gold Pendent/pin

Abstract or Brutalist mid-Century Sterling silver and 14kt Gold pendent has a bathtub style chain in sterling silver as well as a fab style clasp there is a mark from the maker 1960's - 1970's made with two openings on the back rare to find such a piece not only in sterling but also gold. it is a great example of art jewelry Is a pendent as well as a pin The pendent measures 2.5" in length and 11/4 " in width The chain measures 12.5" when folded This piece is marked 925 and we have acid tested it and the gold holds 14kt Excellent used condition.