R.M.S Titanic was billed as the first unsinkable ship. It's design and construction was supposed to keep the ship from ever going down no matter what the circumstances. Well, we all know what happened in the early morning hours of April 15, 1912 when Titanic struck an iceberg and sank on it's maiden voyage. The death toll climbed to 1,517 and to this day is one of the worst peacetime maritime disasters in history and 2012 marks the 100th anniversary.

The fascination with Titanic has only grown over the years and when Titanic's final resting place on the ocean floor was discovered, the excitement level went to a fever pitch.

On April 11 of this year, an auction will be held in New York City by Guernsey's Auctioneers & Brokers. On the block will be one entire collection of salvaged items in one lot. Nothing will be sold separately and the collection was appraised at $189 million in 2007.

The collection includes a chunk of the doomed ship's hull called "The Big Piece," as well as personal items that once belonged to passengers and crew. More than 5000 items will be auctioned off. See a description of the auction below and the trailer from the James Cameron classic "Titanic".