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What are the disadvantages in using a trumpet or cornet valve guard?


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August 15, 2007 3:34AM

Some valve guards can actually tarnish the silver/ lacquer of the instrument rather than protecting it. This happened to me on my Bach Stradivarius and now there is raw brass in one spot on the valve casing. I recommend that you wash it first, and check for blackness or other discoloration of the horn periodically.