The Verto was slightly cheaper than the Adams Vesta produced at the same time. It was issued in 1915 in two versions, for plate or roll-film. Originally available in 2 ½" x 3 ½" and 3 ¼" x 4 ¼" sizes, a short time later a 3 ½" x 5 ½" was added. In 1927 a third version with revolving back was produced in all three sizes. The revolving back 3 ½" x 5 ½" could also be used for 5" x 4".

The Verto was advertised into the 1930s. Early models were fitted with an Exacto (possibly Compound) shutter, in the early 1920s this was changed to a modified Compur shutter in a U shaped housing. The shutter controls as well as engraving differ between early and late shutters. Models fitted with Homocentric lenses were available with an ordinary brilliant finder in place of the Identoscope.