Oh la la-this is one of those fun unsigned dangle necklaces from the 1970's when metal jewelry without crystal made up a majority of the styles. Due to rising gold prices, jewelry designs became sculpture in metal. Larger than life pendants on chains were worn by men and women. Enameling was used to add color to the plain metal in silvertone or goldtone. This represents all of those aspects with a nod possibly to Paris.
I think this looks like the shape of the Eiffel Tower. It has nice artistic designs with the high polish bright white enamel outlined by silvertone trim. The dangle is mid-way creating and interesting action point. The lovely chain adds texture to the streamlined feeling.
In mint condition, this measures 15 inches in total length with the pendant taking up 3 inches of that. Two inches wide at the base of the tower, this is not too heavy and will become a conversation piece-parlez vous Francais? Enjoy!