Object is a tape cartridge. Along the top edge is printed "UNIVERS,-7-FELDTRAGER" and hand-written in green marker, "KNITTER!". A Dymo label on the cover reads "KASSETTE 3" and "UNIVERSAL-7-FELDTRAGER".
Printed on right side inner end
Printed on lower edge under smoked cover
Etched on metal tag under smoked cover lower left corner