chase,
Welcome to a real guitar forum. and the folks are real too!
If you found a '67 Guild F30 under a pile a rags, you are fortunate indeed. Do not hesitate to have it assessed. That is an excellent guitar.
I own two Guilds ... a '74 D25/6 Mahogany and a '76 F212SB. I've owned them since new and you can not find a more reliable instrument. Of course I'm biased
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Les