It may be a picture of the iceberg that sunk the Titanic -- and it could go for up to $10,000 in an upcoming auction of Titanic artefacts.
American action house RR Auction lists the hundred-year-old photograph on its website.
The shot was taken by the captain of the steamer S.S. Etonian, who scribbled a hand-written note on the picture:
"Copyright. Blueberg taken by Captain W.F. Wood SS Etonian on 12/4/12 in Lat 41 50 N Long 49 50 W. Titanic struck 14/4/12 and sank in three hours."
The auction house notes the coordinates listed on the picture are very close to where the Titanic went down.
No pictures are available from the night the iceberg struck, but two surviving Titanic crewmen drew sketches the auction house says are "eerily similar" to the iceberg in their photo.
It is also similar to a photo of an iceberg taken on April 15, 2012, by a German ship near the sinking site.
"...[It] closely matches the elliptical shape of Wood's photograph offered here, but with a slightly different shape attributable to the angle of the photographer and the aftermath of impact," the auction house notes.
RR Auction's "Bidding for the Titanic II" action runs from December 13 to December 16.