Still learning about vintage ukes myself. Not sure how about old growth mahogany and how different it can be.
Your post reminded me of another uke that I looked and looked... and looked at...
Can others tell me if I was correct in thinking that this one was koa and not mahogany as listed?
And if it was koa, would it be worth much more than a mahogany version?
Always meant to ask someone knowledgeable...
I came close to buying it but didn't pull the lever:
Martin Style one uke 1920's 1920's Natural
https://applink.reverb.com/item/6445278-martin-style-one-uke-1920-s-1920-s-natural