I have a Martin Galaxy alto that I have no idea who made. I've heard that they were made by either Yanagisawa or Vito. The bell brace has the triangle inside the circle, which seems to be a Vito symbol, but from what I've been reading, all of the Vito horns were actually stencils. Could the triangle/circle be the Leblanc symbol, since Leblanc owned the Martin name at the time? I can't find the Yanagisawa symbol anywhere on the horn. Am I mistaken that Vito didn't actually manufacture their own horns.