This stamp is from the "Italia Turrita" series. I believe this series was issued over the period 1953 to 1977.
Thank you, PeatedMike. Knowing the name I could look them up and found they are also called "Syracuse Coin" stamps.
The French have Marianne Stamps. What are these Italian stamps called? Would someone kindly tell me what years they were issued? Thanks.
re: Name and years of Italian Definitive stamps