This brooch is an interesting combination of Nouveau and Edwardian styles, and is remarkably similar to a couple pieces by Whiteside & Blank that we’ve seen; however it is unsigned. The pin consists of a framework enameled in very pale green, in a formal Edwardian key pattern. In the middle is a sprig of leaves with a pearl berry; the stem twines around the framework in back, in a Nouveau style. There are 3 additional pearls set on the frame. It is marked (and tested at) 10k on the C-clasp. There is a little enamel loss, otherwise in very good condition. Circa 1905. The photos are part of the description, so please examine them carefully. Thanks! Shipping, handling & insurance within the USA included.