A Russian Gold-Mounted Nephrite Swivel Seal, St. Petersburg, circa 1890

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The handle formed of a gold coronet hanging from a suspension loop, the swiveling matrix made of a disk of nephrite
marked with 56 standard and with partially illegible maker's mark. Matrix initialed with a Latin letter N beneath a coronet. With fitted box.
Length 1 1/4 in.
3.2 cm