Wollensak lens dates?

[AnselAdamsX]

Is there any information online to date a Wollensak Baush-Lomb Tessar Series IIb SN:2688631? It is on a Kodak 3A Autographic Specal Model B w/coupled rangefinder which narrows it to 1916-1934.

Thanks
Chris

[Paul Fitzgerald]

Ansel,

that would be a "Baush-Lomb Tessar Series IIb SN:2688631", Wollensak made Velostigmats but also made lots of shutters. It would be easier to date the camera.

Have fun with the hunt.

[AnselAdamsX]

Didn't find lens dates but was able to date it between 1916 and 1919 using: http://www.eastman.org/fm/mees/htmls...00445_ful.html
My 3A has a consealed bed release which they stopped using after 1919.