9ct yellow gold 'Australia and swan' brooch by Willis & Sons marked with a 'Unicorn' '9' 'W'. Measures 24 x 21 mm, with safety chain Willis & Sons were located in Hay and Murray St Perth, from 1899 to 1907. They were also in Melbourne and Sydney. Reference: Australian Jewellers, Makers & marks, by Cavill, Cocks & Grace, p.271 & 332