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Pacific Mail Steamship Co.

SS Japan

A wooden sidewheel steamer of the Lincoln era. A wreck the ocean kept.

Music: 'Penumbra' by Scott Buckley - CC-BY 4.0
The Ship

She was Pacific Mail's flagship - the largest American wooden sidewheel steamer in the Pacific, when fire took her in the South China Sea on December 17, 1874.

Abraham Lincoln signed her into existence. $10.47 million in silver trade dollars went down with her. 150 years on the ocean floor. 400 souls. A story most people have never heard - but deserves to be known.

The perfect palace of a ship.
- Mark Twain
As Featured In
COIN WORLD
June 8, 2026 · News & Analysis Feature

The ‘Titanic’ of the Far East

NGC certifies the first documented coins from the 1874 S.S. Japan shipwreck.

DeepSea Numismatics, in partnership with historian Captain Robert S. Wells (USN, Ret.) and numismatist Matthew Tavory, announced the first NGC-certified coins from the wreck of the Sidewheel Steamer Japan - the largest documented loss of Chinese immigrant life on an American vessel in history.

“The most significant and only known concentration of S.S. Japan Trade dollars in existence.”- Coin World Staff
The Full Recovery

The Scars of Fire & Water

A passion project... 141 years in the making. 

THE FIRST NGC CERTIFIED SS JAPAN TRADE DOLLARS

Choice Examples In The Vault

Struck at Carson City and San Francisco. Lost in the South China Sea. Authenticated more than a century later.

The vault holds every authenticated piece - SS Japan and beyond.

Browse the Full Vault →