What is the worlds most expensive banjo?

The world's most expensive banjo is the Gibson Mastertone RB-17 "The Jewel". It was made in 1937 and is inlaid with over 1,000 pieces of pearl, gold, and ebony. The banjo was owned by Earl Scruggs, who is considered one of the greatest banjo players of all time. The banjo is currently valued at over $500,000.