enlarge 44KB, 397x640 1Candas Duette Mechanism enlarge 46KB, 640x397 2105112 Coro Katz Bow 37 Patented by Coro as a Brooch enlarge 48KB, 640x375 3110296 Coro Verrecchio Brooch Duette 38 "Quivering Camellia" Duette p. 51 Brunialti, American Costume Jewelry enlarge 62KB, 640x392 4110296 Robin Deutsch Collection enlarge 50KB, 640x408 5Linn Alber Camelia Duette enlarge 32KB, 640x336 6Coro Camellia Frame enlarge 44KB, 640x522 7115266 Coro Katz Floral Brooch Duette 39 "Bell Flower" Duette p. 68 Tribute to America, Brunialti enlarge 70KB, 515x640 8LChampion Duette-5 enlarge 52KB, 403x640 9LChampion Duette-5b enlarge 43KB, 640x458 10115852 Coro Katz Floral Brooch Duette 39 "Trembling Flowers" Duette p. 68 Brunialti, Tribute to America enlarge 38KB, 640x494 11116233 Coro Katz Floral Brooch 39 "Nodders Flower" p. 68, Brunialti, Tribute to America enlarge 71KB, 640x386 12116233 Duette Courtesy Diane of Past & Present Jewelry enlarge 67KB, 640x472 13116233 Duette Courtesy Jan of EdgewaterVintage Jewels.com enlarge 60KB, 640x412 14LChampion Duette-4 enlarge 67KB, 640x516 15LChampion Duette-4b enlarge 42KB, 640x449 16116477 Coro Katz Pin Clip Duette 39 enlarge 31KB, 640x377 17116478 Coro Katz Pin Clip Duette 39 Quivering Camellia Duette - variation on design patent 110296. p. 51, Brunialti, American Costume Jewelry enlarge 81KB, 640x426 18116478 Enamel Variation - Courtesy Jan of EdgewaterVintage Jewels.com enlarge 64KB, 640x356 19116478 Courtesy Merry Kaufman enlarge 29KB, 640x335 20116607 Coro Katz Floral Pin Clip 39 enlarge 34KB, 640x528 21116607 Courtesy Beth Rowlands of Emerald City enlarge 47KB, 640x446 22EmCity Duette 1 enlarge 35KB, 640x330 23122199 Coro Katz Rose Brooch Pin Duette 40 enlarge 40KB, 640x380 24122436 Coro Katz Rose Brooch Duette 40 enlarge 39KB, 640x358 25122438 Coro Katz Floral Brooch Duette 40 enlarge 30KB, 640x299 26122485 Coro Katz Floral Duette 40 enlarge 81KB, 548x640 27Jan Bunny Flower Lady Coro duette enlarge 43KB, 640x325 28diane Past and Present Coro Floral 3 enlarge 35KB, 640x338 29122603 Coro Katz Pin Clip 40 enlarge 29KB, 640x332 30122604 Coro Katz Pin Clip 40 enlarge 44KB, 640x419 31123165 Coro Katz Floral Duette 40 enlarge 38KB, 640x357 32123165 Courtesy Adrienne Shivers enlarge 41KB, 640x353 33123280 Coro Verrecchio Floral Brooch Duette 40 Quivering Camellias Duette - variation on design patent 110296 enlarge 29KB, 640x320 34125171 Coro Verrecchio Brooch 41 enlarge 0KB, 640x474 35125171 Luda Tovey Collection enlarge 26KB, 640x371 36125171 Frame enlarge 45KB, 545x640 37125171 Courtesy Beth of Emerald City enlarge 29KB, 619x640 38126490 41 Coro Verrecchio Calopsitta Clip enlarge 49KB, 466x640 39Coro Calopsitta Duette Luda Tovey Collection enlarge 43KB, 599x640 40Calopsitta Frame enlarge 45KB, 506x640 41Enamel Variation Courtesy Jan Gaughan Eclectic Vintage enlarge 52KB, 640x573 42127445 Coro Pauzat Seahorse Brooch 41 enlarge 22KB, 640x413 43127909 41 Coro Katz Birds SingingPair Brooch enlarge 68KB, 640x393 44127909 Pat Seal Collection enlarge 49KB, 640x534 45128823 41 Coro Katz Birds Brooch Giant Pheasants duette. p. 72 Brunialti, Tribute to America enlarge 27KB, 640x487 46129437 41 Coro Katz Bird 2Owls Brooch Pictured on p. 175, Leshner, Costume Jewelry Identification and Price Guide enlarge 76KB, 403x640 47129437 Duette Robin Deutsch Collection enlarge 35KB, 505x640 48130144 41 Coro Verrecchio Duette "Lovebirds Duette", p. 73/74, Brunialti, Tribute to America enlarge 55KB, 640x388 49130144 Kaye Jaye Collection enlarge 61KB, 476x640 501941 - No Patent 1941 "Big Birds" Duette without frame. Not patented. p. 73/74 Brunialti, Tribute to America Luda Tovey Collection enlarge 63KB, 640x419 51131524 Coro Katz Floral Duette 42 enlarge 49KB, 640x419 52131976 Coro Verrecchio Floral Duette 42 enlarge 35KB, 640x459 53131976 Luda Tovey Collection enlarge 30KB, 640x313 54131976 Duette Frame enlarge 53KB, 640x604 55133472 42 Coro Katz Bird Duette enlarge 56KB, 640x386 56133472 Sparrow Duette beautifully restored. Linn Alber Collection enlarge 37KB, 640x433 57133477 Coro Katz Bee Duette 42 enlarge 72KB, 640x568 58133477 Courtesy Cordelia's Cache enlarge 44KB, 640x515 59133479 42 Coro Katz Birds Duette enlarge 46KB, 640x320 60133745 Coro Katz Bow Duette 42 enlarge 62KB, 639x640 61134981 43 Coro Katz Birds Duette enlarge 66KB, 640x452 62134981 1943 Courtesy of Annete Forslund enlarge 44KB, 640x351 63134981 1943 Courtesy of Annete Forslund enlarge 61KB, 640x402 64134981 Courtesy Sherry of Glitter-Gals enlarge 40KB, 640x466 65135970 Coro Katz Thoro Breds Duette 43 enlarge 57KB, 576x640 66135970 Courtesy Jennifer Lynn's Timeless Treasures enlarge 66KB, 640x598 67135970 Clips and Earrings Luda Tovey Collection enlarge 41KB, 640x558 68138612 44 Coro Katz Bird 3Owls Duette enlarge 38KB, 640x470 69138958 Coro Katz Frogs Duette 44 enlarge 35KB, 640x423 70138960 Coro Katz Hoots Owls Duette 44 enlarge 38KB, 462x640 71138960 Robin Deutsch Collection enlarge 65KB, 513x640 72138960 Courtesy Brenda of vintagejewelry.com enlarge 34KB, 519x640 73138961 44 Coro Katz HeavenlySwallows Duette enlarge 44KB, 640x455 74138961 "Heavenly Swallows" pin, duette & earrings Luda Tovey Collection enlarge 33KB, 640x411 75Swallows Frame enlarge 46KB, 640x419 76139096 Coro Katz Floral Duette 44 enlarge 41KB, 640x464 77139101 Coro Katz Dolphins Duette 44 enlarge 37KB, 640x344 78139102 Coro Katz Nautilus Shell Duette 44 enlarge 67KB, 640x622 79139102 CoroCraft Sterling 1/2 Duette Luda Tovey Collection enlarge 33KB, 640x414 80139405 Coro Katz Fish Duette 44 enlarge 69KB, 640x549 81139405 Courtesy Merry Kaufman enlarge 41KB, 538x640 82139405 Clip (half duette) Luda Tovey Collection enlarge 46KB, 640x419 83139406 Coro Katz Floral Duette 44 enlarge 68KB, 632x640 84139406 Courtesy Beth Rowlands of Emerald City enlarge 39KB, 640x419 85139691 Coro Katz Duette 44 enlarge 39KB, 640x430 86140014 44 Coro Katz "Bill and Coo" Duette enlarge 59KB, 640x428 87140014 44 Courtesy incrediblejewelry.com enlarge 46KB, 640x634 88140326 Coro Katz Fighting Cocks Duette 44 enlarge 45KB, 640x308 89140326 Cathy Gordon Collection enlarge 36KB, 640x430 90141073 Coro Katz JB Turtles Duette 45 enlarge 43KB, 640x558 91141116 Coro Katz Birds Duette 45 enlarge 35KB, 640x537 92141120 Coro Katz Birds JB Duette 45 enlarge 56KB, 492x640 93141120 Kaye Jaye Collection enlarge 29KB, 640x413 94141121 Coro Katz Bow Duette 45 enlarge 41KB, 640x524 95141180 Coro Katz Fighting Birds Brooch enlarge 30KB, 640x510 96141346 Coro Katz Dancing Girls Duette 45 enlarge 34KB, 640x398 97142483 Coro Katz Rabbits Duette 45 enlarge 50KB, 640x342 98143223 Coro Katz Duette 45 1 enlarge 43KB, 640x489 99144195 coro Katz King Queen Duette 46 enlarge 35KB, 640x449 100144196 45 Coro Katz Bird Heads Duette enlarge 41KB, 640x423 101143224 Coro Katz Bow Duette 45 enlarge 47KB, 640x419 102144197 Coro Katz Floral Duette 46 enlarge 29KB, 640x290 103146031 Coro Katz Fans Duette 46 enlarge 39KB, 640x445 104146032 Coro Katz Ladies Faces Duette 46 enlarge 47KB, 640x528 105146033 Coro Katz Deer Duette 46 enlarge 36KB, 640x401 106146034 Coro Katz Swirl Duette 46 enlarge 31KB, 640x359 107146035 Coro Katz floral duette 46 enlarge 39KB, 640x551 108146036 46 Coro Katz Peacock Duette enlarge 74KB, 640x512 109146036 Courtesy Lisa Botsko of Jazzle Dazzle enlarge 39KB, 640x499 110Courtesy of Louise Champion enlarge 46KB, 617x640 111Courtesy of Louise Champion enlarge 69KB, 446x640 112146036 Ad "...inspired by old China..." Courtesy IncredibleJewelry.com enlarge 42KB, 640x356 113146037 Coro Katz Floral Swirl duette 46 enlarge 36KB, 640x412 114146038 Coro Katz Floral Duette 46 enlarge 30KB, 640x364 115146039 Coro katz Duette 46 enlarge 31KB, 640x346 116146048 Coro Katz Bow Duette 46 enlarge 30KB, 640x352 117146051 Coro Katz Floral Duette 46 enlarge 34KB, 640x480 118146141 Coro Katz Bird Duette 46 "Cocorito" enlarge 34KB, 640x398 119147179 Coro katz Duette 46 enlarge 52KB, 640x362 120Duette - Shield Similar but not identical enlarge 23KB, 640x308 121Sheilds Frame enlarge 35KB, 640x427 122147441 coro Katz Butterfly Duette 46 enlarge 41KB, 640x506 123147452 Coro Katz Brooch 47 enlarge 37KB, 640x456 124147661 Coro Katz Brooch 46 enlarge 35KB, 640x370 125147664 Coro Katz Brooch 47 enlarge 75KB, 640x415 126Linn Alber Coro Duette enlarge 42KB, 640x458 127147665 Coro Katz Brooch 47 enlarge 36KB, 640x458 128147666 Coro Katz Brooch 47 enlarge 55KB, 640x382 129147667 Coro Katz Ribon Sheild Form Duette 47 enlarge 42KB, 640x419 130147669 Coro Katz Floral Duette 47 enlarge 36KB, 640x416 131148174 Coro Katz Duette 47 enlarge 48KB, 640x419 132148875 Coro Katz Floral Duette 48 enlarge 71KB, 640x419 133148876 Coro Katz Flower Duette 48 enlarge 58KB, 640x419 134148877 Coro Katz Flower Duette 48 enlarge 43KB, 640x444 135148998 Coro Katz Duette 47 enlarge 39KB, 640x403 136149069 Coro Katz Flies Duette 47 enlarge 38KB, 640x463 137149187 Coro Katz Turtles Duette Brooch 47 enlarge 31KB, 640x417 138149189 Coro katz Fish JB Duette 48 enlarge 25KB, 640x304 139149363 Coro Katz floral duette 48 enlarge 32KB, 640x346 140150593 Coro Katz Shell Brooch 48 enlarge 40KB, 640x464 141150616 Coro Katz Duette 48 enlarge 37KB, 640x320 142151137 Coro Katz Bow Duette 48 enlarge 42KB, 640x565 143151151 Coro Katz 2 Birds Duette 48 enlarge 68KB, 640x423 144151151 Coro Lovebirds Duette Ad enlarge 37KB, 640x366 145151258 Coro Katz Comet Duette 48 enlarge 57KB, 640x422 146Coro Comets Duette Luda Tovey Collection enlarge 38KB, 640x475 147Comet Frame enlarge 47KB, 640x399 148151259 Coro Katz Bow Duette 48 enlarge 59KB, 499x640 149151259 Coro Katz Duette 48 Robin Deutsch Collection enlarge 40KB, 640x441 150151262 Coro Katz Duette 48 enlarge 36KB, 640x451 151151264 Coro Katz Duette 48 enlarge 40KB, 640x408 152151265 Coro Katz Bow Duette 48 enlarge 53KB, 640x359 153LChampion Duette-3 enlarge 67KB, 640x519 154LChampion Duette-3b enlarge 48KB, 640x384 155151266 Coro Katz Bow Duette 48 enlarge 49KB, 640x419 156151364 Coro Katz Floral duette 48 enlarge 57KB, 640x373 157151364 Courtesy Linn Alber enlarge 94KB, 640x500 158151364 Coro Apple Blossom Duette Ad enlarge 31KB, 640x402 159151996 Coro Katz Duette 48 enlarge 32KB, 640x446 160151998 Coro-Katz Duette 48 enlarge 39KB, 640x486 161151999 Coro Katz Duette 48 enlarge 34KB, 640x446 162153068 Coro Katz Duette 48 enlarge 22KB, 640x378 163154396 Coro Katz Flower Brooch 49 enlarge 76KB, 640x531 164Linda Herberling coro duette enlarge 107KB, 578x640 165No Patent - Coro The Victor Horse Ad_1948 Sold as a single pin the horse was called "Victor" - when sold as a duette it was called "Daily Double". enlarge 54KB, 640x488 166No Patent - Duette and Earrings "DAILY DOUBLE" duette originally sold for $4.50, matching earrings at $2. Also sold as a pin with a single horse called "VICTOR". Luda Tovey Collection enlarge 51KB, 640x569 167Daily Double Frame enlarge 50KB, 640x420 168155163 Coro Katz Bow Duette 49 enlarge 39KB, 640x385 169155891 Coro Katz Deorative Bow Duette 50 enlarge 30KB, 640x339 170158592 Coro Katz Floral Ribbon Duette 50 enlarge 33KB, 640x293 171159632 Coro Katz Decorative Ribbon Duette 50 enlarge 34KB, 640x410 172163200 Coro Katz LoveBirds Duette 51 enlarge 25KB, 640x371 173165290 Coro Katz Foliate Duette 51 enlarge 32KB, 640x400 174169002 Coro Katz Dancers Minuet Duette 53 Patent number supplied by Sherry Jones of Glitter Gals enlarge 35KB, 640x422 175169679 Coro Katz Dancing Flower Girls Duette 53 enlarge 54KB, 640x427 176177260 Coro Katz Foliate Duette 56 enlarge 46KB, 640x316 177177380 Coro Katz Foliate Duette 56 enlarge 83KB, 509x640 178Coro Ad - 1948 6 different duettes featured Courtesy Beth of Emerald City enlarge 54KB, 640x240 179Rachel J Coro Duettes enlarge 46KB, 640x321 180Coro Floral Duette.1 enlarge 37KB, 640x359 181Floral Vermeil Frame enlarge 62KB, 542x640 182Jennifer Lynn Timeless Treasures Coro Duette enlarge 38KB, 640x426 183Lee Coro Duette enlarge 32KB, 640x340 184Adrienne Shivers Coro duette enlarge 56KB, 640x271 185diane Past and Present Coro Floral 5 enlarge 70KB, 640x591 186Jeri Coro Floral duette Courtesy of Jeri of Jeri's Joolz enlarge 72KB, 455x640 187Coro duette bracelet demi czech style.1 enlarge 44KB, 640x365 188Unusual Frame enlarge 36KB, 640x501 189Mystery Frame enlarge 37KB, 640x374 190Sue Sinclair Mystery Duette Frame.1 enlarge 38KB, 640x320 191Sue Sinclair Mystery Duette Frame.2 enlarge 26KB, 640x431 192Mystery Duette Frame Courtesy of Beth Rowlands of Emerald City 2¼ by 1¼” enlarge 49KB, 640x378 193Suzi UK Floral Duette enlarge 28KB, 640x276 194Suzi UK Floral Duette Frame enlarge 60KB, 640x409 195LChampion Duette-2 enlarge 60KB, 640x488 196LChampion Duette-2b enlarge 50KB, 640x296 197LChampion Duette-6 enlarge 60KB, 640x432 198LChampion Duette-6b enlarge 55KB, 640x333 199LChampion Duette-7 enlarge 58KB, 640x453 200LChampion Duette-7b enlarge 56KB, 640x453 201LChampion Duette-8b enlarge 45KB, 640x300 202LChampion Duette-9 enlarge 52KB, 640x432 203LChampion Duette-9b enlarge 52KB, 640x295 204LChampion Duette-10 enlarge 54KB, 640x419 205LChampion Duette-10b enlarge 35KB, 640x397 206Courtesy of Louise Champion enlarge 41KB, 640x511 207Courtesy of Louise Champion enlarge 32KB, 378x640 208Courtesy of Louise Champion enlarge 36KB, 465x640 209Courtesy of Louise Champion enlarge 33KB, 640x401 210Courtesy of Louise Champion enlarge 47KB, 594x640 211Courtesy of Louise Champion enlarge 48KB, 636x640 212Courtesy of Louise Champion enlarge 46KB, 640x545 213Courtesy of Louise Champion