[Ans] What nickname is stamped on every official NFL football?

Step 1 : Introduction to the question "What nickname is stamped on every official NFL football?"

The official game ball of the National Football League is stamped with the nickname "The Duke" in honor of Wellington Mara, the longtime owner of the New York Giants, who was named after the Duke of Wellington by his father, Tim Mara,. Wilson Sporting Goods, the manufacturer of the NFL ball since 1941, named the ball after Wellington Mara to reward his father Tim Mara for arranging the contract that made Wilson the official supplier of footballs to the NFL. The nickname was originally used from 1941 to until 1970. After Wellington Mara died in 2005, “The Duke” returned to the game ball in 2006.

[Answer] What nickname is stamped on every official NFL football?

Step 1 : Introduction to the question "What nickname is stamped on every official NFL football?"

...The official game ball of the National Football League is stamped with the nickname "The Duke" in honor of Wellington Mara, the longtime owner of the New York Giants, who was named after the Duke of Wellington. Wilson Sporting Goods, the manufacturer of the NFL ball since 1941, named the ball after Wellington Mara to reward his father Tim Mara for arranging the contract that made Wilson the official supplier of footballs to the NFL. The nickname was originally used from 1941 to until 1970, and Wellington Mara died in 2005, Wilson returned "The Duke" to the game ball the following year in his honor.