Ross Zeiss Convertible Anistigmat vintage brass lens - odd markings L@@K

Description

Very clean Ross lens made in the U.K. The glass is very clean and the brass barrel is also very nice, showing only minor signs of use. The lens is about 1 1/2" tall. The rear threads measure about 37mm across. There is no mounting flange included. This has 3 scales for f stops. One reads F: 12.5 to F: 64 11 1/4 IN S, another reads F: 8 to F: 45  5 IN C and the third reads F: 12.5 to F:64  7 1/4 IN S. The blades are working well. The front lens says Zeiss Patent 11 1/2" and is number 15303. The rear lens says Zeiss Patent 7 1/4" and is number 15300. Lots of numbers. I will be listing a few other vintage brass lenses and I will gladly combine shipping.