Conch Shell is a trading item in 80 Days. Should you have this in your possession when you return to the Reform Club, the butler might put it over the mantlepiece (unless he likes something else better).

Seed Found in Sell in £
3 Honolulu Salt Lake City 1500
4 Honolulu Houston 2000
6 Honolulu Dallas 2300
8 Honolulu San Francisco 2000
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