I was researching the IMO most undocumented Martins of all, the Medalist under RMC, and I came across a Bob Ackerman video on Youtube where he says that the Medalist Alto he was selling was made of Martin parts from the 1940s onwards. That would explain the one I'm looking at which has what looks like the body of an Indiana/Committee 3, the Nickel Silver keywork of a Comm2, the RH movable thumbrest of a Comm3 and it has the heart shaped LH thumbrest of a Comm2. The neck is like an Indiana's. A real mongrel. It also makes sense because I'm guessing that when RMC took over Martin they ended up with a lot of inventory which they had to put to use one way or the other and I'm also guessing the Medalist is the outcome of that inventory reduction. I might be completely wrong so please enlighten me if you have more information on this.