The listing has quite a few very detailed pictures and states, "Composition of the metal is unknown to me - The body is non ferrous."
Given the pictures and the description I'd say that calling it a "silver clarinet" instead of a "silver-plated clarinet" in the title is not really any grounds for a complaint.
For a multi piece "high quality when made" metal clarinet it appears that you won it at a fair market price. Absent any issues with screws and rods being corroded in place, you should wind up with a nice old piece that should be enjoyable to play.
Best wishes for success in your project.
Given the pictures and the description I'd say that calling it a "silver clarinet" instead of a "silver-plated clarinet" in the title is not really any grounds for a complaint.
For a multi piece "high quality when made" metal clarinet it appears that you won it at a fair market price. Absent any issues with screws and rods being corroded in place, you should wind up with a nice old piece that should be enjoyable to play.
Best wishes for success in your project.