Up for auction at Sotheby's is the late Jack Bruce's SB-1000 which he used for a short period of time in the early '80s. Of note is the serial number: 088047. He was also featured in an Aria Pro II advert with this bass and the quote "It's a bloody good axe!". This particular bass has a very plain grain but is still a very interesting instrument for Bruce / Cream fans. The bass is expected to go for between 3,000 - 5000 GPB.
