NECKLACE 3 ROWS BLACK FACETED GLASS BALLS 1960 VINTAGE GOOD QUALITY ZECOUSLV REGISTRATION? ZECHOSCOV? TO BE IDENTIFIED C2150 - This necklace is made entirely of glass, the balls are faceted black. It is in gold metal, typical of the 60s.  Note micro scratches for the more picky. Back of the clasp yellowed. Is there a marking to decipher on the ring of the Made ZECOUSLV clasp? or  ZECHOSCOV? without certainty. Maybe it's Swarovski crystal. Very beautiful clasp also in faceted glass. For the condition, please detail the photos. The photos are an integral part of the description. Dimensions: Length: 44.5 cm Width: approximately 3 cm for 3 rows I remain at your disposal for any questions.