Does anyone have or ever see the Dart Hurst Shifter?

Still trying to get my kids to show me how. I have had no luck attaching pictures. I'll give it another try.

There is a picture of this shifter on page 81 of R.M. Clarke, editor Dodge Dart: 1960-1976 Limited Edition Extra (Surrey, United Kingdom, Brooklands Books, Ltd., no date for publication given). I bought this book a week ago. The Hurst handle curves up, then to the left, and then back with a round knob.