TRENTON - Some young-at-heart residents in Hoboken, New Jersey, may be raising a glass in memory of "Slacksy O'Brien."

That was one of their nicknames for Frank Sinatra, the native son who would have been 100 years old on Saturday. Sinatra got the nickname because he always had nice clothes.

Hoboken has spent a good part of the year honoring the entertainer known to the world as "Ol' Blue Eyes" and "The Voice."

The Hoboken Historical Museum will dedicate a new plaque honoring Sinatra, starting at noon Saturday. The Postal Service has a special cancellation mark for fans who want to mail a note postmarked on the day.

There also will be a centennial birthday party at Stevens Institute of Technology featuring a big band and tribute singers.

Sinatra died in 1998.