Bausch and Lomb f2.8 Large format Vintage Lens. E.F. around 20". Diameter 75.6mm

Description

Bausch & Lomb large format lens. Lens diameter is around 75.6mm and Length is 5 1/4". There is is a small dent in from and an edge crack in front element(see photos). Knob can move lens barrel back & forth. Lens is clean no fungus no major scratches. There is a mark says: 2.8" E.F. ???. I measured it that Focal length is around 19-20". Also it marked:
Bausch & Lomb optical Co. Rochester N.Y. U.S.A. Made For Nioplas (?) Power Co. New York 40094. I tried my best to describe it. Any questiona are welcome. Sold as is. No Return.
Shipping covers lower 48