This is a Vintage Arts & Crafts Stavre Gregor Panis SGP Sterling Silver Thistle Pin Brooch. This wonderful handcrafted & hand-cut Arts & Crafts pin features a thistle surrounded by a leaf wreath with Stavre Gregor Panis (1889-1974) hallmark. He was a well-known silver artist & jeweler who lived in Cape Cod, Massachusetts. The pin bears his hallmark SGP in a cartouche. Beautifully made & hand crafted. A treasure. Condition: antique Arts & Crafts Metal: 925 Sterling Silver Surface: polished Measurement: 1 5/8 inches diameter Clasp: rollover clasp Weight: 10.6 grams Hallmark: SGP/Sterling #2509510 Vintage Arts & Crafts Stavre Gregor Panis Sgp Sterling Silver Thistle Pin Brooch