NEW YORK (November 27, 2012)--The piano used for the song "As Times Goes By" in the classic 1942 film "Casablanca" is going up for sale on Dec. 14 at Sotheby's in New York, and the auction house estimates it will fetch as much as $1.2 million.

A Japanese collector is offering it on the film’s 70th anniversary.

The collector purchased the movie prop at a Sotheby's auction in 1988 for $154,000.

Humphrey Bogart played Rick Blaine in the Oscar-winning World War II love story, opposite Ingrid Bergman's character, Ilsa Lund.

In a famous flashback scene, Rick and Ilsa lean on the piano at a Paris bistro. Sam, played by Dooley Wilson, plays and sings.

They toast as Rick says: "Here's looking at you, kid."