- Issue Date: 1956-05-19
- Withdrawn: 1957-12-31
- Designed by: C Dabrowska (Des)
- Engraving:
- Printed by: Istituto Poligrafico dello Stato, Officina Carte Valori-Rome
- Print Process: Photogravure
- Paper:
- Size (mm): 25x30
- Perforations: 14x14
- Format: Sheet of 60
- Watermark: Crossed Keys
- Booklet: N
- Phosphorescent band in stamps: N