I would suspect thats a Premier drum with a Yamaha mount added later, probably from the early to mid 1960's.
Starting from the interior, it looks to be birch as the wood is a lighter shade in appearance. Also, it has the typical Premier interior reinforcing rings (standard name ecapes me at the moment) around the bearing edge.
Moving to the exterior, the lugs and L shape t rods with the ball on the end are most defenitly Premier. The the leg attachements are also Premier with the spring loaded "press and adjust" easy adjustment mechanism. Lastly, the muffler is also Premier. The adjustment knob is correct as is the actual muffler. It looks to be missing one on one side as there appears to be empty mounting holes and they usually cam with one on each side.
I would say its a 1963 or so.