A general view of fans, coaches and players from both...

A general view of fans, coaches and players from both the New York Mets and the Washington Nationals standing for the performance of the National Anthem during the Mets' home opener at Citi Field. (April 8, 2011) Credit: Getty Images

The Mets sent emails Monday to some of the fans who purchased individual game tickets last April, offering 50 percent off a select number of seats to weekday games this April.

Dave Howard, executive vice president for business, said it is a limited offer designed to “reward customers from last year and encourage them to come back to the ballpark and see the 2011 Mets.’’

Weekday games in April, when the weather is cool and schools are in session, often are a difficult sell, and the Mets were expecting modest crowds for this week’s series against the Rockies.

Are the Mets concerned the offer will anger fans who paid full price?

“It’s something we always have to balance and keep in mind,’’ Howard said. “Because it’s such a limited offer and select games only in April, we feel it’s an appropriate balance.’’

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