If anyone can shed some light on the origins of this lens it would be appreciated.
Picked up this lens today at a Flea market, it looked terrible but has cleaned up fine, optics are excellent. It has a slot for Waterhouse stops, is 5" overall lenght (ex hood) elements 2.5" diameter, FL approx 11" just covers 5"x4". It was sold as a projection lens but the seller hadn't spotted the slot for the stops which slot in the side and between two round disks inside the barrel.
All the mud and grime washed off the lens elements and the spiders that lived in the barrel now have a new home.