Ma il Silver 6 non è Prana..questa è la descrizione sul sito Monette : "This is the first size we made available in November of 2011, and it compares to the common 3C size. It is the exact same rim and cup as our popular B6S1, which is great for professionals who need an all-around mouthpiece, beginners, come-back players and anyone who would otherwise be using conventional 7C, 5C or 3C sizes."