Wondering the cost of some vintage Bach 42 parts

[BrianJohnston]

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I'm wondering approx. how much the following parts may go for in the condition that they're in. Note, these parts are not in my possession, or widely available to the public;


• 1978 42 Corp. Rotor valve section (with, and-or without bell ) - in good condition
• 1978 42 Corp. standard weight Slide (All yellow Brass) - in fair condition

• 1962 42B Mt. Vernon Rotor Valve Section (W/O BELL) - in good condition
• 1962 42B Mt. Vernon standard weight Slide (All Yellow Brass) - In good condition

• 1997 42G Bell Flare - in good condition
• 1997 42G standard weight slide - in fair condition


wide ballpark guesses are greatly appreciated. The more guesses the better, and I thank you all in advance.