Catalog: Estate Jewelry (511)

Condition: Excellent

Size: 2 1/8" square

Hallmark: CoroCraft sterling in cartouche

Reference: Fun Jewelry, Shiffer, p. 15

Reference:

This famous duette has 2 bluebirds perched on 2 flowering grapevines. The birds are hand painted with enamel colors. All of the crystals have been faceted by hand. The birds are 3 dimensional giving you the sight of 2 wings on each bird. Each bird measures 1.75" high and 1.35" wide. The duette measures a total of 1.75" high and 2.75" wide.

Reference: American Costume jewelry 1935-1950 by Brunialti & Brunialti. pp. 80 & 82

Hallmark: CoroCraft,sterling

Condition: near mint

Dimensions bracelet: 7 1/2" x 7/8"

Dimensions earrings: 13/16" x 5/8"

Hallmarked: Corocraft sterling

Condition: Excellent

Dimensions: 3 3/8" x 1 7/8"

Reference: American Costume Jewelry by Brunialti & Brunialti, V2, page 200.

Suggested retail value is $1,295.00

Dimensions:2 7/8" x 1 3/4"

Hallmark : Corocraft, sterling

Condition: Super

Hallmarked duette frame is pat no 1798867.

Circa 1941

Robert Geissmann was of German origin, and lived in New York. He was probably a freelancer who occasionally worked for Cor and the jewelry sector. He was an inventive designer, with an extremely realistic style which he combined with a touch of irony giving his chosen subject matter an almost fantasy-like appearance and strongly defined expressivity. The barely hinted three-dimensionality of the subject is emphasize by its position and the material and colors used.

Dimensions: 2 5/8" x 2 1/2"

Design Patent 110,141 May 20, 1938

Reference: American Costume Jewelry- Art and Industry, 1935-1950 by Brunialti & Brunialti, Schiffer 2008 V. 1 page 97

Dimensions: 1 7/8" x 1 1/2"

Condition: Excellent. Hallmark: Coro Pat pend.

As you can see by the patent below, this duette was designed by Gene Verrechio and patented in 1941. Pat # for the duette is Des. 126,490 and for the clip #1798867.

Coro invented the "Duette" in the 1930s. An ingenious invention. The design involves two pin clips that fit together, joined by a mechanism at the back, so they can be worn together as a single brooch. Or, you can take them apart, and wear them separately.

Reference: Fun Jewelry by Nancy Schiffer. p142.

Reference: American Costume Jewelry by Brunialti & Brunialti, p. 57,58

Reference: Fun Jewelry by Nancy Schiffer. p142.

Reference: American Costume Jewelry by Brunialti & Brunialti, p. 57,58

Dimensions: 2 7/8" x 2"

Hallmark: None