Moz Advanced Monel Piston Marching Mellophone Key from F with Case and Mouthpiece Gold Lacquer Finish : Amazon.de: Musical Instruments & DJ
MMC Music & Marching Center - Dynasty Marching F Mellophone Ausstellungsware, versilbert
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Mellophone Sticker
MMC Music & Marching Center - Concord Field Series Marching Mellophone lackiert
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Can any of my fellow mello/horn players figure out what exactly this thing is (ignoring the taped second valve)? Cause I know it's some sort of mellophone thing. Details in the comments