Content Expert Saxophones
There are 2 different companies that we're talking about here. The older stencils you have in are chart are right. They were made by VEB Blechblas- und Signal-Instrumenten-Fabrik--makers of the blue label B&S horns. The newer ones like the Guardala, Chicago Jazz, Allora, etc, were made by Vogtländische Musikinstrumentenfabrik GmbH. This company made the B&S Medusa, 2001, etc. You just have to add it. The second company was formed in 1989.5. That's from Helen's website. You're definitely right that I missed the new horns. Will fix.
I haven't had a chance to write the histories of these brands yet. They've been in the "to do" list for some time. Things will be a lot clearer when that's done.