The art deco design of the headstock will itself become an identifier for your brand. If it's used consistently. By that I don't mean the color or shape of the inset, but the overall shape and "look" of it. For instance, the "pineapple" or "crown" shape of headstock on a KoAloha instantly tells you that it is one of their instruments. You don't even have to see their logo or look at the label.
After functionality, the reasoning behind builders having a uniquely shaped headstock and a prominent name or identifier on it was to tell people who built the instrument.
It's a mark of pride in making a fine instrument. An artisan signing his work.
But it's also a marketing tool. So that a listener/viewer of a performance can easily see who made it. If they like what they see and hear, they will know how to find out where to get one like it. For instance, if they see a video on YouTube, and really like the sound of the instrument being played, they can search out more samples or find out how to get one.
It also gets your brand out to the public. The more it's seen, the more it is remembered. (Usually take 5 or more exposures to a logo before it begins to register.)
Just thought you'd enjoy a little info about a couple of the thoughts behind the design aspects of branding. And I didn't mean to hijack your thread. So that's the last I will say about marketing.
—And I agree it is a conversation starter. It's gorgeous and quite unique.