The guitar that Duane Allman used to record "Layla" with Eric Clapton, just sold at auction for $1.25 million. The 1957 Gibson Les Paul was also Allman's go-to instrument in the early years of The Allman Brothers Band, and can be heard extensively on the band's first two albums - which include the original versions of songs like "Whipping Post" and "Midnight Rider." You can see the auction item listing here.