The red camphor Burl call is copper over glass. I put it on Ebay and went to take it down less than 24 hours later and it already had a bid on it. That call is one of the few that I have wanted to keep for myself, I just can't put it down. Soft and rounded like a mouth diaphram call, to sharp and scratchy raspy. I am actually going to shoot a video of myself playing her tomorrow so i have a standard to measure all of my copper calls up against. She sounds scary good. I have a unique way of conditioning my copper and it works crazy good. And yes it's top secret lol.
Thanks for the compliments fellas.
"Instruments of Mass Destruction"