Forgotten Summer, UK

This Kodak Verichrome Pan film in 620 format came from the UK. According to Wikipedia Kodak discontinued production of this film in 120 format some time in the 1970s. Presumably, type 620 was discontinued at the same time. The instructions on the backing paper say "Take snapshots in sunny or cloudy-bright conditions. Adjustable camera 1/100 or 1/25 second."

The film was developed in HC-110 solution B at 18 °C for 6 minutes. The camera is unknown. It uses 620 type film, shoots 6x6 frames and does not have a double exposure prevention. The latter feature was frequently used by the unknown photographer to a remarkable effect, most likely unintentional. And they did follow the advice and took the snapshots in sunny and cloudy-bright conditions.