Take your collection of Heart memorabilia to the next level with this Dog & Butterfly Album that is hand-signed by Steve Fossen, Michael Derosier, Howard Leese and Nancy Wilson. These Grammy-nominated rockers are known for such such hits as "Crazy On You," "Magic Man" and "Barrucuda." Examined by BAS, this piece is registered in the service's database with a unique serial number to verify its authenticity.