Silver necklace, circle, and oval amber

Silver link chain, fineness Ag 875 / 1000. Marked: Soviet hallmark ( Moscow ) , Czechoslovak hallmark ( hare head, number 4. ) . Larger pendant, in the shape of a flat circle. In the middle, on a hinge, oval polished natural amber. At the bottom of the circle, an embossed ornament of circles of twisted wires. Total weight 10.45 grams. Marked: Soviet hallmark from the period 1958 - 1992, Riga, manufacturer's mark, Czechoslovak hallmark ( hare, number 4 ) . Kaliningradskij Jantarnyj Kombinat. Length 23 cm.