Will need a good cleaning I’ll leave that to the pros. I do not know who the manufacturer is.
Large brass Petzval lens, unknown maker. Not Darlot, Dallmeyer, Ross
Antique Brass Photo Lens Petzval Camera CKO
Antique Brass Photo Lens Voigtlander No. 5 Old Vintage Camera 1884
Antique Brass Camera Lens A DARLOT PARIS PETZVAL f/4.5
ANTIQUE BRASS CONDENSER LENS - PROJECTOR MAGIC LANTERN ?
ANTIQUE BRASS CONDENSER LENS .
