I’ve been wanting to try out an old Blessing M-300 and see if I like it more than the Yamaha 301 marching baritone. I’m also interested in using the valves for a project horn. The problem is, I’ve seen them come with three different logos. I know that the one that says “Blessing Artist Elkhart, Indiana” is confirmed to have Bauerfeind valves, as well as the stencil/clone F.E. Olds with the logo that says OLDS in all caps with an outline. The other ones I’m not sure.