Musical Double Note Silver Keyring. This novel 925 Sterling Silver Keyring is in the shape of a Double Musical Note. The keyring has a nickel plated split ring and is fully hallmarked and gift boxed. A great gift for the music lover. Matching Single Note Keyring and cufflinks, Double Note Cufflinks and Treble Clef Keyring & Cufflinks available. See below for matching Gifts.