It it were me, I surely would NOT leave any labels on the bottles if I was going to sell them. You might open your mail box one day and find a not so nice letter from some high priced lawyer in patent leather shoes and a $5,000 suit telling you to "cease and desist" LOL
The glue joint on the glass will eventually let go unless you use a silicone product and even then, the possibility is there that it too will come apart on you.
Finally, I think the call is good as a novelty, but it's not something any serious hunter should consider taking in the woods with him. We have enough problems with people who think all hunters are drunks with guns to be out there hunting with a beer bottle call.
Other than that - cool idea. Very creative.
Al @ THO