A locker key belonging to a steward on the Titanic could make up to ?�30,000-50,000 ($36,577-60,962).
It will star in a dedicated auction of Titanic memorabilia at Henry Aldridge Auctioneers in Devizes, UK on October 22.
The lot was the property of a Sidney Sedunary and features a brass tag stamped "locker 14, F deck".
The auction house comments: "The significance of this key revolves around evidence given at the British Inquiry by Steward John Hart.
"It shows Sedunary heroically working on F Deck on the very night of the sinking, even though it was flooded forward."
Sedunary was one of 1,500 unfortunate passengers and crew to perish in the disaster.
This key, found in Sedunary's pocket, was one of a handful of artefacts sent home to his widow after his body was recovered from the site of the wreck in April 1912 - along with a watch, the hands frozen at 2:20 AM.
A set of keys to the Titanic's lamps sold for ?�20,000 ($24,385) at Sotheby's last month, double their ?�10,000 ($12,192) estimate.
The sale will include a letter written by a crewmember after being rescued. It recounts the terrifying final hours aboard the ship.
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