You mean "masterpiece" like DARK SIDE OF THE MOON is a "masterpiece" or like WISH YOU WERE HERE is a "masterpiece"?
If so, I'd have to say, IMO, no way man.
Perhaps even AHM, MEDDLE and ANIMALS (though by then, PF was getting soundly "Rogered") could, to a lesser or greater extent, also be included amongst the two mentioned above. But DSoTM and WYWH revealed the GROUP at their very best and, I think, at the height of their respective and collective creativity.
Sadly, we all know what is lacking in TDB, so how could it possibly be a "masterpiece"
Flummoxed Floydian,
Byron