Carved marine mammal ivory whistle (identified here as walrus ivory, based on appearance), finely scrimshaw-engraved with Ellis’s distinctive anchor-and-rope crest/insignia—an emblem closely associated with his maritime life and seen across related personal effects from the Ellis archive. A vivid survivor from early San Francisco civic history: Ellis came to California in 1849, worked as a gold miner and ship captain, joined the San Francisco Police Department in 1855, and rose to become Chief of Police from 1875–1877; in the pre-radio era, a chief’s whistle served as an essential signaling tool to summon assistance and coordinate response on the street. Dimensions: 2.75 x 1 x 1 in. Provenance: Al and Carol Cali Collection. Pickup & Shipping: Free pickup in Gardnerville, NV. FedEx Ground/Home Delivery within the continental U.S.: $50 + 1.5% insurance (unless waived in writing). Combined shipping available. Ivory & Marine Mammal Compliance Note: Offered as an antique ivory object; ivory laws vary by jurisdiction and may restrict sale and/or shipment, including for marine mammal ivory such as walrus (a North Pacific species). If you reside in California, Oregon, Washington, New York, New Jersey, Minnesota, Illinois, Hawaii, or the District of Columbia, we cannot ship directly to you — but you may legally purchase and pick up the item in Nevada (or have an agent pick it up for you). Buyers are responsible for compliance with all applicable laws. Good antique condition with warm age patina; expected handling wear and minor surface marks; scrimshaw engraving remains clear. No major chips or structural cracks observed in the provided photos. Works.