This photograph shows the inside of Butch Robins' 1930 Gibson RB4 banjo. Several musical visionaries have been invited to autograph this resonator by scratching their names in it, including Bill Monroe, Bill Keith, Earl Scruggs, Don Reno, Snuffy Jenkins and others. Also seen in this photograph is the factory order number of this banjo. Most Gibson banjos produced in the 1920-1940 time frame were not given serial numbers exactly, but have factory order numbers on them. The resonator, rim and possibly the neck all had this number on them to keep the parts together during production. Butch Robins was born May 12, 1949 in Lebanon, Virginia and has been a professional musician most of his life. In addition to a successful solo career, he was a member of Bill Monroe's Blue Grass Boys, Wilma Lee and Stoney Cooper's band, Charlie Moore's band, the New Grass Revival and other bands. He currently lives in Virginia and is still a working musician. Orville Gibson founded The Gibson Mandolin-Guitar Mfg. Co., Ltd in Kalamazoo, Michigan in 1902. Over the years the company has changed names and locations and today is known as Gibson Brands, Inc and is headquartered in Nashville, TN. The company is known for having made some of the finest banjos, mandolins and guitars.