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Royal College of Music Museum on Twitter: "This 13-keyed alto clarinet with curved brass crook was made by Thomas Key, between 1830-40. The unicorn maker's mark is stamped on every joint. https://t.co/5KfTq6cU9o" /
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Abbott Mfg. Co. (branded), Semi-Curved plateau clarinet with +/- sax fingering | Sax on the Web Forum
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