The Billy-Clack is a standout piece of pre-war German engineering, famous for its distinctive Art Deco "striped" or "ribbed" leatherette body (clearly seen in images DSC_0000-1677 and 1678). While many folding cameras were generic, the Billy-Clack was designed with style in mind. This specific unit features a high-end Prontor II shutter and a Steinhall Cassar lens, which was a significant upgrade over the basic single-element lenses found on most consumer folders. It produces eight large 6x9cm negatives on standard 120 film. The name "Billy" comes from "Billig" (German for cheap/affordable), though the build quality is anything but basic.