It is estimated there are about 20 Titanic menus in existence, but most of those relate to the first class restaurant for April 14 - the day the ship collided with an iceberg.
That's because more first class passengers survived the sinking and some happened to have the menus in their handbags or jacket pockets when they entered the lifeboats.
Almost all male second class passengers died in the sinking and as a result there are only two second class menus left
But there are only a couple of second class and third class menus, which have sold for a lot of money.