You can probably get one from Gibson for a price unless it is really old, or look on Reverb/Ebay etc. for a used one. What year and type of tuner are you looking for? If you are unsure post a photo and probably someone here will be able to identify it for you. I have little interest in the minutia of all the specific variations that are "period correct" since I am more interested in making music, but many here get a lot of enjoyment out of the history and variations throughout the years. One of the reasons I originally signed up here was the wide and diverse knowledge base that exists in the membership. We have quite a few experts who know more than I ever dreamed of about these things.