Bosch & Lomb Lens Question

[catalinajack]

I have 139mm Tessar lens cells in top condition, no shutter. Worth anything? At all useful? Good performer?

[Mark Sawyer]

Probably a pretty good performer and useful on 4x5 without movements, but not worth much as these are very common. Could be a taking, enlarging, or process lens, as all were made by Bausch & Lomb in the Tessar design in great numbers.