In *The Adventures of Tintin*, the main pursuit for most of the movie is a sunken shipwreck with 400 weight of gold and treasure hidden with it.

But I can't help but wonder, as I'm not familiar with the measurement, how much *is* 400 weight of gold?

More specifically, **what would 400 weight of gold be worth today (or perhaps more relevantly, in Tintin's day)?**