Vintage & Unique Chatelaine Silver Tone FOB Brooch

Probably my grandmother's as she lived in NYC in the 1930s/40s Beautiful silver tone / gunmetal looking three chains draping from one pin to another The Pin has a unique design hanging down. Chain design on this piece is beautiful Measures about 8 1/2" open....Pin measures about 3 1/2" long & about 1 1/2" wide Pre-owned and needs cleaning