I have a used (but in new condition) MSA Sordin Supreme model 75303 communications headset with bone mic. These work perfectly and show no signs of damage.
I do not have the PTT adapter anymore (you can find these online or go to your comm shop to get one seeing as how more and more units are using these).
I am willing to entertain trades of equal value (used high end medium plate carrier or chest rig, etc) or looking to get $200 for these (or make me a reasonable offer).
Here is a picture of what I have. Email or message me for pictures of the actual item. This is just a web image.
http://www.modarmory.com/images/DSC_3228.JPGPlease email me at: mpmilillojr AT Yahoo DOT com
Thanks!