A Wager on Diamonds

Exploration Stage: Laboratory
From: Isabelle
Description: I think I know how to get solid proof that the lab's owner actually visited the past. Find the Order of the Bath that, according to the Master, he won from Admiral Nelson in a card game. If the order really is in the laboratory, we won't have any more reason to doubt that the Master is more than a simple collector of antiques.
Completed: The same legendary knight's cross of the Order of the Bath, which granted Nelson nobility and the rank of Rear Admiral! You actually found it! Now I have no doubt about it: The Master is a real time traveller!