I am doing this search for my Brother in law. A neighbour gave him a Marlin 602 guitar and he doesn’t know anything about it and is curious as to what it may be worth.

I’m having a hard time googling information on it. Any ideas would be appreciated – any info at all. From my googling it sounds like this things doesn’t even exist, but I have seen it! lol

Would there be any markings, etc., on the guitar that we are unaware of that would make it easier to identity?

Thanks in advance for any info.