I have a 210mm f/5.6 Topcor (Horseman) plasmat in Copal #1, Ex condition except marks on iris (no current grease, happened during a mounting mishap) works well and I've used it since for two years. Speeds sound reasonable but I have no tester.
It is now surplus to my needs and I'd sell it for $170 plus actual post to the UK. I guess I'd keep the elements and iris scale for a $20 credit, so $150 plus post for the shutter only.