Complete Standard brand horn for 1915 Model T, no it does not make a sound as the bulb is way too dried out and stiff! $350, domestic postage $18.
Sorry to hijack your thread, Layden, (but I will). I need a '15 horn tube as shown in your picture. The mounting bracket for the upper end of the tube is shown well in your pic. It is a brass strap which fits around the tube, not the earlier type with a small post as part of it. If anyone has a good tube like that, I'd be interested in having it. I have the horn and elbow. email@example.com or 479-790-4229.