This Zeiss Ikon 7 Koblitz 4 folding fan flashgun unit is a vintage piece made in Germany. It is compatible with universal brand cameras and has a mount interface of cold shoe. This unit is perfect for photography enthusiasts who want to add a touch of vintage to their collection. The flashgun is in good working condition and has been gently used. The brand of the flashgun is Zeiss and the model is koblitz 4. This flashgun unit is a must-have for anyone who wants to capture stunning vintage photographs.