20" Byzance Vintage Pure Crash. The Vintage Pure Crash features an overall dry sound character with a relatively fast decay. Unique tones for drummers who want to express themselves. They have a distinctive and earthy look.. Byzance Vintage Pure cymbals are created by a process in which the metal becomes very flexible. While this character gives them a unique response, slight deformations may occur at the cymbals edge. Such changes are within the accepted standards of this cymbal and will not affect the sound. Therefore, slight deformations at the edge are not covered by the warranty.