I attended a benefit concert last night. The group consisted of two brothers and a "non-related" bass player. One brother played a 1920 A2 Gibson (black) mandolin. The other brother played a 1957 D21 with Brazilian rosewood back and sides. He is the third owner and has owned it since the mid '80's. It is in very good original condition and sounded fabulous. A very fortunate set of brothers!