Vintage Kodak No.2 Folding Autographic Brownie circa 1919-1920

The camera has a 'Kodak Ball Bearing Shutter' with speeds B, T, 1/25 sec., 1/50 sec.
Aperture f numbers are not specified on this model. Instead, the aperture scale uses numbers 1 to 4. I believe that these digits convert to present day f8, f11, f22, f32.
The lens appears to be the '2-element achromatic doublet', focal length about 98mm, maximum aperture about f8. Apparently the placing of the glass elements behind the shutter was standard for this lens, so there is no glass 'on the front'.