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What is the significance of gold plating on a mouthpiece of the instrument?

I'm trying to select a mouthpiece for the French Horn. I wondered about over-regulation that is in the nozzle, compared with standard plates.

not just for looks. It is the saliva and the rest of their body juices contain various chemicals, including acids of one kind or another. Depending on how acidic you are, you may find interaction chemistry with his instrument. The gold coating acts as a barrier to at least slow the corrosion and oxidation of metals minors below. (A horn know I had to not only relacquer but over time the gold plate of the flash in his hand was because both reflexes and hand turned green) I think there have been studies reporting also the effect on the sound of overregulation, but do not have the item in hand. Check out any of The Horn Call (will be an old issue) or perhaps through the search engine of your choice.

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