Fiftieth anniversary of the death of Antonio Pacinotti

30 £. - Diagram of the dynamo - Red and black - Perforation stamp 14 × 14 ¼ b - Watermark stars IV - Intaglio printing - Printed from IPS Workshop cards values ​​- Sheets 50 - Size 40 × 24 (mm) - Drawing C. Mancioli - Circulation 7.959.953