No Hallmark, Small Scratch on Bottom of Backside Where Gold Was Tested. Cameo Measures 26.15mm x 34.6mm. Pendant Measures 35.05mm x 43.25mm Approx. 1 3/8" x 1 3/4". Please See Photos/Send Questions for More Detail.The item "Antique 10K Gold Ornate Carved Shell Cameo Pendant Pin Victorian Relief Filigree" is in sale since Thursday, September 26, 2019. This item is in the category "Jewelry & Watches\Vintage & Antique Jewelry\Fine\Art Nouveau/Art Deco 1895-1935\Cameos". The seller is "dragonpez" and is located in Edmonds, Washington. This item can be shipped worldwide.