MULHOLLAND, John (1898 – 1970). John Mulholland's Rabbit-in-Hat Cufflinks. Circa 1950. A set of bespoke Sterling Silver and copper cufflinks crafted in the shape of Mulholland's rabbit-in-the-hat logo, the studs engraved with his initials, “JM." With a fish hallmark to the verso of each stud.