Fiftieth anniversary of the death of Antonio Pacinotti

70 £. - Diagram of the dynamo - red and blue - Stamp Perforation 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 4.865.739.