Antique brass lens by Ross London. It is a No. 3 Cabinet likely from the second half of the 19th Century. Front shade is dented, but likely not beyond correction should it vignette. Glass needs to be properly cleaned [note: we have NOT cleaned]. There does not appear to be any fungus.
Includes one Waterhouse Stop insert.
Weighs approx. 5lbs 14oz.
Rear element measures approx. 4".
This lens has been in storage at our shop for at least 30 years.
Please feel free to ask any questions prior to purchase.