Found an old piece stamped "800 Silver" while digging through my grandfather's things, turns out it's German, maybe pre war or thereabout. Got me thinking…anyone here actively stack or invest in 800 silver, or is it more of a collector's game? I know it's not quite sterling, but it still has that real deal feel, how do you all see it in terms of value or future potential. Worth holding onto, or better to flip for .999?