For sale is a Rodenstock 5.6/210 Sironar N. This is the 'Sinar select' sinaron s version, said to be the cream of the crop. It is in used condition, but it makes great images. It is Sinar DB mounted, I also have a shutter, camera, and other lenses for sale.
It has an image circle of 300m, giving generous movements on 5x7.
Asking $300, includes front cap.