The sterling mark , which guarantees that it is 925 grade or over, and the 935 grade mark for finest silver (so it is slightly above sterling). Size 80 by 50 mm. The item "AUSTRIAN ART DECO SILVER & BLUE WITH WHITE GUILLOCHE ENAMEL CARD BOX" is in sale since Thursday, April 25, 2019. This item is in the category "Antiques\Silver\Solid Silver\Boxes".The seller is "metalminnie" and is located in Reading, Berkshire. This item can be shipped worldwide.