The Eagles will don blue and yellow uniforms from 1933 to celebrate their upcoming 75th anniversary season.
The team will wear the uniforms, designed with the NFL and Reebok, during a Sept. 23 home game against the Lions.
The blue and yellow colors, reflective of the City of Philadelphia flag, were adopted by the Eagles when they replaced the bankrupt Frankford Yellow Jackets. William Penn incorporated the blue and yellow colors of Sweden to use in Philadelphia's flag. Swedes had settled the area.
"We will celebrate 75 years of Eagles football and the most passionate fans in the NFL during the 2007 season," Eagles chairman/CEO Jeffrey Lurie said at a press conference today.
The franchise will sell merchandise reflecting the colors, such as hats and jerseys.
The Eagles also will ask fans to vote on a team comprising the best players over the 75 years.
A heavyweight, 'authentic' 1933 jersey, like the one the players will wear in the throwback game, sell for $275. Other throwback jerseys sell for $80.