Elizabeth II. 1952 to date. Palladium 1 crown. 31.103 gm. 32 mm. 1 troy oz. Celebrating the bicentenary of the discovery of palladium by William Wollaston. Produced for the Isle of Man by Pobjoy mint. 2004. Helmeted bust of Pallas Athena (one of the namesakes of palladium) left / Crowned bust of Elizabeth II right. Cf. Friedberg 146 (2 crown). PCGS First Strike Proof 69 Deep Cameo. Includes certificate of authenticity listing it as no. 32 of 999, all contained within decorative hinged box.