West Australian 'Coolgardie' gold miners brooch, c.1900, 18ct yellow gold, attributed to Donovan & Overland, jewellery manufacturers Perth depicting small nuggets, windlass, pick and shovel with mounted arched lettering 'Coolgardie' marked '18ct'. Length 54 mm. Weight 6 grams. note: for a similar design, see Gold & Silversmithing in Western Australia, a History, by Dr. Dorothy Erickson, page 76