Unfortunately, what struck me most about the video was the reckless abandon, tearing off a piece of the large bowl and using the shovel to "GOUGE" the contents leveraging against the side. While it may be true that the only value might be the silver itself, you could be destroying history! What if the tiny trophy cup had a handle broken in the process? decreasing the value 10x or more?
As a fellow detectorist, I value the history as much as the silver. We ask for permissions to dig, promising to fill our holes and showing respect for the privilege. We should do the same for the history! If you just set it aside to be more carefully cleaned at home with a good soak and careful removal of dirt and grime you would gain much more value.
Please, In the future, respect the history and take care with it as if it were something that you might have worked for a long time to be able to afford. I am sure that was the case for whomever lost these treasures so long ago!