I have a rare gorgeous antique Suter Basel Aplanat B No.7 brass large format lens. It is 135mm long and 90mm across the front. It appears to be in very good shape for its age. The manufacture number is 9203. There are signs of tarnish on the brass surfaces and I did not try to polish it. There is a slot for waterhouse stops. The scratch free glass is very clear with just a few dust particles inside under normal lighting, but when a super bright light is shown through, if does have a bit of cloudiness.