He said it was supposed to contain gold coins, but the lock and the hinges were so rusty which made it very hard to open. I tried a hammer and a crowbar, but the box just won’t budge.
So, I’m thinking of trying to open this box with a stick of dynamite, as a last resort. I’ll update you guys later if it works or not.
EDIT: Wow, this blew up! Thanks for the gold, kind stranger!