ID-ing a Kamoa (500S?)

I'm guessing on the model number, since it's part of the serial number line on the interior sticker. This is a used item, and I'm trying to figure it's potential worth.

Photos:

Many thanks in advance for any info you can provide.

EDIT: Aaaaaand of course after I post this, I find a link to the Kamoa site that I somehow didn't find when I last was searching. It is indeed a Kamoa 500S. Seems like some folks found this model to be overpriced and not a great performer (albeit that was several years ago). Any opinions these days?

The 500 series is their custom line. To me, this looks like one with the “vintage red” finish. Here’s a link to the 500 series page: https://kamoaukuleles.myshopify.com/collections/500-series

That said, the stock photos in that link shows different tuning heads, so not sure if you’re looking at a truly older model or if the owner changed the dog ears for pegheads after market.

Hope that helps!

Btw, the figured patten on that maple back is something else; I thought the grain was running the wrong way for a second!

I have one and really like it. My second one as my cat knocked over the first and Sam at kamoa sold me anohter at a great price when we were back in Kuaii. Sam said that is why they made cat gut stings. LOL Sam and I are both cat lovers so it was just a joke. Sam is a great guy! I like the wide neck and the bling. Love the bell like chime of my concert.