Catalogue of highly important Renaissance jewels including the Siren jewel, Italian, late 16th century, a South German enamelled gold pendant jewel, in the form of a ram, second half of 16th century, a very large French enamelled gold pendant, of the Sacrifice of Abraham, second half of the 16th century, a German or Flemish enamelled gold and jewelled pendant, in the form of a dolphin with a nymph on its back, late 16th century, a South German enamelled gold tabernacle jewel, of the Adoration of the Magi, late 16th century, also rock crystals, including a Milanese probably Saracchi rock crystal galley, late 16th century, a Milanese Saracchi workshop enamelled gold and jewelled ewer in the form of a dragon, circa 1600, an Italian enamelled gold engraved and rock crystal casket, mid-16th century, an enamelled gold and rock crystal hexagonal bottle, attributed to the Habsburg Imperial Court Workshop, Prague, late 16th century, a Milanese rock crystal enamelled gold and jewelled marriage tazza, last quarter of 16th century, also works of art, including an enamelled gold, silver-gilt and ebony combined house altar and cabinet, made by a Bavarian court goldsmith, late 16th century, two Italian enamelled gold and heliotrope cups, second half of 16th century, an enamelled gold tazza set with gold casts from antique coins, first half of 16th century, a French enamelled gold and rock crystal watch, by C. de Lespée of Rheims, early 17th century, a French enamelled gold cup and cover, late 17th century : which will be sold by auction by Sotheby & Co. ..., day of sale Tuesday, 13th October, 1970