Was just in a fiend's studio and spotted a big old piece of brass on a shelf. It's made by Scientific Lens Co. in New York, is labeled a portrait lens (about the same size as my Dallmeyer 3A), is a f4-250 with a Waterhouse slot, and the serial number is 11898. Good glass with only slight hazing so we might put it back into service.

A quick search here found very little information and a Google search produced nothing, so I'm asking for any information the our members might have about the history of the lens, the company and possible current market value.

Thanks in advance.