I have one of those, an SDX III that I bought new very cheaply on mail order (maybe Mullarkeys) for my first #12 rod about 20 years ago. It weighs 15.3 oz without any line or backing. I believe it was sold as Shakespeare, though there is nothing on the reel, its wooden box or the parts and care sheets to say that. The handle on mine is metal chrome. I was amused to see it given some sort of star billing by TT.
I use it for loading backing onto other reels. I wind the backing onto the SDX then wind it from the SDX to the new reel with the drag set so that the weight of the SDX tensions the backing on the new reel.