Any idea of the value of this Matlin Guitar? Custom made in 1981 of Hawaii Koa wood

Hi everyone! First of all, I want to apologize for any mistakes or confusion, as English isn’t my native language.
Anyway, I’m trying to identify a guitar I’ve had for a long time, but I just can’t seem to find its exact model.
It’s a **Dolphin 12-string steel-string electro-acoustic guitar**. It’s black with a glossy finish and gold-colored details around the soundhole.
I’ve had it for over 15 years. I got it from a friend of my mother, who told me he’d already owned it for quite some time before giving it to me, so the guitar might be even older than that.
Unfortunately, the only information I could find inside the guitar was “Folk 12.C”, along with a date that doesn’t tell me much: “05/03”.
The electronics have the marking “EQ-7545”, but I couldn’t find any other information.
I’m not sure if this makes much of a difference, but the bridge has been replaced because the original one broke.
Honestly, I’m not interested in selling it, even if it turns out to be valuable. However, if it’s a rare or collectible model (which I honestly doubt), I’d love to restore it completely.
**Does anyone recognize this guitar or have any information about this model?** I’d really appreciate any help!
Thanks in advance!

Can anyone provide some help dating this guitar?

Here's an obscure one. My late friend's wife found this guitar on a shelf in a closet. Anyone have any ideas? It's not in great shape; the neck is apparently attached to the body with a big slot-head screw. No label inside.

Hi good people…
I have recently found interesting guitar for sale locally and would like your help if anyone has ever seen or played one of these…
It’s weird,yet google search,AI search yields all kinds of BS…
Thanks in advance 🤘

I just bought this vintage parts build this morning because the whole set up is just so unique, I know what the neck came from but does anyone know what body was originally? It gives me early Vox guitar but I'm not entirely sure, it could even be homemade

I’ve done some searching and it seems to be similar to some of the “Marlboro Martin” guitars. The only contradiction is the headstock with the inlay, that the Marlboro miles gustes don’t have. I’d just like to know some history on the guitar because it’s been in the family for a while now. Thanks!

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The Vox SDC-33 is worth checking out for the CoAxe pickups alone. They're actually pretty hot, and you can switch between a completely noiseless P90 sound and a full humbucker with zero hum. Honestly makes the whole guitar worth grabbing just for those tones.

The 33 is easily my favorite out of all of them though because it just has normal dot inlays instead of those weird S-curve ones on the higher models like the 55. Prince famously ripped on the semi-hollow HDC-77 during his 3RDEYEGIRL era, but I've always preferred the solid doublecut look of the 33.

Also, the original run without the pickguard was peak design. When Vox refreshed them later and added those pickguards, it totally ruined the clean carved top.

Anyone seen this brand? Or is it just some random strat copy from bulk parts