I have been trying to find this headset, or get some information. I was originally told the model number was wrong but I persisted because I saw these headsets for sale in a shop near where I live a while ago. I have now been told that they were never actually made by Sony. Could anyone help me from here? How would I find out who did make them?

I dont know. Someone is offering 10,000 Pounds for one on 

http://www.sonyvintage.com/?page_id=2939

I have no idea what it even looks like. Good luck finding one m8