I am big historian by nature, and I always think of this situation in comparison, when it comes time to make a quick move and go with it at the right time, of course knowing that is the answer to the 64,000 dollar question....
I always thought that the Germans had little chance of keeping the Allies out of Europe, esp after opening up a war on two fronts. Conquering England was a must, and they of course could not beat the RAF and gain air superiority, and go ahead with operation Sea-lion, aka an all out invasion of the UK, which never happened....
Once D-day began, Hitler COULD NOT be convinced that Normandy was the main attack zone, and thought Calais would be the place where the attack would occur, via Patton being stationed across from Calais with that fake balloon army of tanks and jeeps (nice ruse eh), etc. In turn, Hitler had his main core of Panzer's stationed in Calais. If he had immediately gave the order to reinforce Normandy

(such as selling at the right time, around the peak) than perhaps they would have had a thin shot of blowing the allies back in the English channel before setting up a beachhead. A Month later, he gave the order for the tanks to move, like buying at 25 an oz, and selling panicked at 15....
I think if it did crash to the bottom via silver, us that enjoying collecting it for what it is, and also thinking more in the long term, have a chance to get back up in the black. Of course the US would need that debt to disappear over night, and I don't see that happening, for that bottom out to take place of the silver market....