Did The Beatles use a Fretless Guitar in 1968 ?!

In 1968, Kenny Everett interviews the Beatles at Abbey Road. The interview captures John Lennon playing a fretless guitar. What was the fate of this guitar? Was it used on any Beatle recordings? Enter to win Eastwoods Black Widow! Big thanks to Eastwood Guitars for letting us tryout a fretless for these comparisons!!