WMF trinket bowl in the shape of a sheet

It dates back to the early 20th century. It has 3 punches: wmf, the brand's ostrich-shaped punch and a 35 punch. It is silver metal, wear of the silver layer especially in the middle of the sheet where we see the golden metal that is underneath. A little scratched. The photos are part of the description. Dimensions: 23.8 X 19.5 X 4 cm.