When the album was released in mid 1967, quadraphonics had not yet happened. So the 4-track could not have been intended for a quad mix.
They were doing bounce and copy techniques between two 4-tracks.
On the 25th of April. 1973 the masters were signed out for a "Quad Remix" , this is at a time of course when EMI was investing in their quad issue/re-issue program.
True, but they used the stereo master tape, undoubtedly for fake quad mix.
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