The Agfa Clack is a box camera produced by Agfa from 1954 to 1965. It was sold in North America as the Agfa Weekender.
It is a simple camera which was aimed at the mass market. About 1.65 million were produced, more than all other Agfa box camera models combined.
It uses 120 film, creating large 6x9 negatives. It has only one shutter speed, and, depending on model, either a single f/11 f-stop or a choice of two. (Wikipedia)