This attractive record bag (both sides are the same) is from the German Bertelsmann label, and adorned 45 rpm singles issued by the label in the late 1950s into the early 1960s. As with many other European countries, most German singles came in dedicated picture sleeves but not all. The single here (some sort of MOR marching band) seems to date from 1958 so I suspect the sleeve is also from that time, but information is not easy to come by and Bertelsmann had several different designs in the early days. This is the only one I’ve seen to feature a photograph however, with teenagers in a mock up of a soft drinks bar, some dancing, others reclining in metal framed canvas butterfly chairs (I remember my dad having one of these in the Fifties!). I can see an early Nina and Frederik album or ten inch from 1957 amongst several unknown records scattered on the floor.