Do you have a picture of the one you have?
Below - Left to right, original DX nozzle with hose, StreamAir Nozzle, Mistral Nozzle, Reproduction Mistral Nozzle.
Under the crimped fitting on a DX nozzle/hose, are barbs for the hose to attach to. As Bryan mentions, the DX parts are hens teeth. I have some brass stock to make a few some day.