Vintage guitars tend to hold their value very well. This is especially true for brands like Gibson and Stratford that are highly sought-after. Check out this 1956 Gibson Les Paul, which recently sold for $18,300. Many other guitars regularly sell online for thousands of dollars if they’re rare, and in good working condition. Having the original case is also a huge plus.
But unless you play guitar yourself, or have at least done a ton of research, it’s hard to know if a guitar is actually worth something or not. I’ve struck out buying cheap string instruments like guitars and violins that weren’t worth anything, simply because I’m not an expert on the subject matter.