Hello
That Premier drum set looks like it is post-67 - they changed the lugs from roundish to edgier - and Flushbase stands made way to LockFast stands - naturally I could be wrong, while the picture is not that sharp. Another thing that gives it are bass drum spurs - they used to be shorter and located lower in the body. 1967 they were moved higher and made longer. That is clearly visible in this YouTube video.