Hey folks, I'm new to the board. Thanks for having me. I'm checking out a Mount Vernon Bach. I've never played Bach trumpets, but it plays/sounds nice. I don't know the model #. There appears to be none, only a serial #. It's 18546. ML bore. Here's what I'd like to know: How reliable are these old horns? What should I expect to pay? Any advice will be greatly appreciated. Thanks!