Beatle Banjo "Goodwill store" find!!

I found this at the goodwill the other day. I've been researching and found that it has some value. I'm looking to sell it but I'm deciding between E-bay or private auction. A major auction house is interested and wants to meet with me.




And this one really ticks me off because the worker at the store said it was perfect when they received it and I was there when they brought it out so obviously one of the workers did it. They wouldn't let me go in the back to see I could find the piece. Had I found it, it would have added $ hundreds to the value.