Rodenstock Sironar-N 360mm f6.8 MCThe Rodenstock Sironar N 360mm f6. 8 MC is a large, slightly longr lens for 8x10 cameras. In excellent condition, mounted in an accurate Copal 3 shutter and a Deardorff lens board. There's no retaining ring included, but the custom retaining ring on the board can be removed and used to mount this on a different board, in a pinch. In excellent cosmetic condition, with only minor wear; glass is clean, with minor dust.