I would like to do an even swap of my Tek Greek series 10" elliptical concentric coil for ANY DD coil compatible with my Omega 8000. I come from a Minelab background and have become very accustomed to the DD coils and how they perform in my soil. I just purchased the Omega a couple of weeks ago and this coil has only seen the dirt in my back yard for about 4 - 5 hours. I did not get a coil cover with it but it is in excellent shape obviously. I have a good reputation for buying/selling/swapping but I just got into detecting again after a two year hiatus. Please let me know what you have and condition. Thanks! George Fatizzi