Hi Everyone. Here is a Rolleikin counter knob, complete with the three special screws (they are under the leather cover. This came on a Rolleiflex 3.5E that I bought in 2016, but I did not have the rest of the parts and did not intend to use 35mm film in it. Therefore, I bought a regular knob and removed the Rolleikin counter knob. How does $15.00 sound including 1st class postage to a USA address? After installing, you will need to glue down the leather cover with a removable adhesive. Please PM if you have any questions.