How much would a 1960's Gibson J-45 go for?

I know someone who has one, and I was just wondering what it's worth.

It has a few battle scars, but it's in pretty good condition to be as old as it is.

Estimate please?
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-Jimi Hendrix-

Quote by CodySG
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does it have a banner in the middle of the headstock? If it does then it could go for more than you think.