Diplomat for greatest sensitivity, that's what they are all about. I think it was original on the bottom as well.
The mistake people always made with the Dynasonic was trying to get a fat, honking backbeat out of it. Very difficult since that is not what it was made for. The drum was developed with Buddy Rich in mind: he wanted the most sensitivity and clarity and maxed-out ghost note response. That's what the drum delivers.
The reason so many show up without snare frames is twofold: a lack of understanding in how to set up the frame/wires and/or unhappiness with the sound.