1954 First Day Cover envelope

The Philadelphia Athletics

Connie Mack Stadium, Philadelphia

What makes this piece interesting is it was addressed to Earle Mack. Earle was the coach of the Athletics for two seasons when his father was sick. 

Satisfaction guaranteed.

Neat estate find.

Earle Thaddeus Mack, was an American player and coach in Major League Baseball, and, during parts of two seasons, manager of the Philadelphia Athletics when his father, Connie Mack, was too ill to manage.

Shibe Park, known later as Connie Mack Stadium, was a ballpark located in Philadelphia. It was the home of the Philadelphia Athletics of the American League (AL) and the Philadelphia Phillies of the National League (NL). When it opened April 12, 1909, it became baseball's first steel-and-concrete stadium. In different eras it was home to "The $100,000 Infield", "The Whiz Kids",...