The legendary 1958 Gibson Flying V guitar, famously owned by Lonnie Mack and dubbed 'Number 7', fetched an impressive $550,000 at auction. This auction also featured Mack's 1962 Magnatone Custom 440 amplifier, which was crucial to his distinct sound. Mack's guitar, tailored for his innovative techniques, has had a profound influence on blues-rock music for many years.