|Unstamped Crate of Human Souls|
Unstamped Crate of Human Souls is considered a common Cargo item and is considered contraband in London.
"A crate of human souls. This one has never known the tender touch of the Imperial Customs stamp. Consequently, it cannot be sold on the open market, and you'd better not be caught with it."
You need to deliver this item to Mount Palmerston in order to advance the storylet.