There are many different types of Art Nouveau silver plated boxes. They range from jewelry boxes to snuff boxes. Many are unmarked but some bear the marks of their makers. There were many notable makers such as WMF, Orivit and Walker and Hall.
Below are some examples and price guides of Art Nouveau silver plated boxes including a box made by WMF and a cigar box with a winged Art Nouveau girl
Silver-plated box made by WMF1905
Reference: Museum of Applied Art and Sciences
A LATE 19TH/EARLY 20TH CENTURY SILVER PLATED BOX Decorated overall with cherubs in relief, the interior lined in red silk raised on turned bun feet, 28cm wide, 12cm deep, 11cm high (11in wide, 4 1/2in deep, 4in high)
Sold for £ 500 inc. premium at Bonham’s in 2018
A WMF SILVERED METAL CIGAR BOX CIRCA 1905 Decorated in relief with stylised foliage and a winged art nouveau girl, wood lining, stamped maker’s marks 4¼in. (10.5cm.) high; 7½in. (19cm.) wide; 5½in. (14cm.) deep
Sold for GBP 2,750 at Christie’s in 2012
Orivit Art-Nouveau Large Beautiful Jewelry Box, Germany, Circa 1900. Floral and foliage ornaments. Monogrammed
Sold for $260 at Pasarel in 2020